References
- Klempner, D.; Sendijarevic, V. Handbook of Polymeric Foams and Foam Technology; Hanser Publishers: Munich, 2004.
- Lee, S.-T.; Park, C. B.; Ramesh, N. S. Polymeric Foams: Science and Technology; CRC Press: Boca Raton, 2006.
- Yang, J. M.; Liao, X.; Li, J. S.; He, G. J.; Zhang, Y.; Tang, W. Y.; Wang, G.; Li, G. X. Light-Weight and Flexible Silicone Rubber/MWCNTs/Fe3O4 Nanocomposite Foams for Efficient Electromagnetic Interference Shielding and Microwave Absorption. Compos. Sci. Technol. 2019, 181, 107670. DOI: https://doi.org/10.1016/j.compscitech.2019.05.027.
- Li, Y.; Shen, B.; Yi, D.; Zhang, L. H.; Zhai, W. T.; Wei, X. C.; Zheng, W. G. The Influence of Gradient and Sandwich Configurations on the Electromagnetic Interference Shielding Performance of Multilayered Thermoplastic Polyurethane/Graphene Composite Foams. Compos. Sci. Technol. 2017, 138, 209–216. DOI: https://doi.org/10.1016/j.compscitech.2016.12.002.
- Yang, J. M.; Liao, X.; Wang, G.; Chen, J.; Tang, W. Y.; Wang, T. F.; Li, G. X. Fabrication of Lightweight and Flexible Silicon Rubber Foams with Ultra-Efficient Electromagnetic Interference Shielding and Adjustable Low Reflectivity. J. Mater. Chem. C. 2020, 8, 147–157. DOI: https://doi.org/10.1039/C9TC05152J.
- Jiang, Q. Y.; Liao, X.; Li, J. S.; Chen, J.; Wang, G.; Yi, J.; Yang, Q.; Li, G. X. Flexible Thermoplastic Polyurethane/Reduced Graphene Oxide Composite Foams for Electromagnetic Interference Shielding with High Absorption Characteristic. Compos. Part A. 2019, 123, 310–319. DOI: https://doi.org/10.1016/j.compositesa.2019.05.017.
- Li, H.; Sinha, T. K.; Oh, J. S.; Kim, J. K. Soft and Flexible Bilayer Thermoplastic Polyurethane Foam for Development of Bioinspired Artificial Skin. ACS Appl. Mater. Interfaces 2018, 10, 14008–14016. DOI: https://doi.org/10.1021/acsami.8b01026.
- Dong, D. D.; Ma, J. Z.; Ma, Z. L.; Chen, Y. M.; Zhang, H. M.; Shao, L.; Gao, J. P.; Wei, L. F.; Wei, A. J.; Kang, S. L. Flexible and Lightweight Microcellular RGO@Pebax Composites with Synergistic 3D Conductive Channels and Microcracks for Piezoresistive Sensors. Compos. Part A. 2019, 123, 222–231. DOI: https://doi.org/10.1016/j.compositesa.2019.05.019.
- Liu, H.; Dong, M. Y.; Huang, W. J.; Gao, J. C.; Dai, K.; Guo, J.; Zheng, G. Q.; Liu, C. T.; Shen, C. Y.; Guo, Z. H. Lightweight Conductive Graphene/Thermoplastic Polyurethane Fams with Ultrahigh Compressibility for Piezoresistive Sensing. J. Mater. Chem. C. 2017, 5, 73–83. DOI: https://doi.org/10.1039/C6TC03713E.
- Ma, Z. L.; Wei, A. J.; Ma, J. Z.; Shao, L.; Jiang, H. E.; Dong, D. D.; Ji, Z. Y.; Wang, Q.; Kang, S. L. Lightweight, Compressible and Electrically Conductive Polyurethane Sponges Coated with Synergistic Multiwalled Carbon Nanotubes and Graphene for Piezoresistive Sensors. Nanoscale 2018, 10, 7116–7126. DOI: https://doi.org/10.1039/c8nr00004b.
- Shao, Y.; Luo, C.; Deng, B. W.; Yin, B.; Yang, M. B. Flexible Porous Silicone Rubber-Nanofiber Nanocomposites Generated by Supercritical Carbon Dioxide Foaming for Harvesting Mechanical Energy. Nano Energy 2020, 67, 104290. DOI: https://doi.org/10.1016/j.nanoen.2019.104290.
- Martini, J. E.; Waldman, F. A.; Suh, N. P. The Production and Analysis of Microcellular Thermoplastic Foams. SPE ANTEC Tech. 1982, 43, 674–676.
- Zhang, A. J.; Zhang, Q. K.; Bai, H.; Li, L.; Li, J. Polymeric Nanoporous Materials Fabricated with Supercritical CO2 and CO2-Expanded Liquids. Chem. Soc. Rev. 2014, 43, 6938–6953. DOI: https://doi.org/10.1039/c4cs00100a.
- Okolieocha, C.; Raps, D.; Subramaniam, K.; Altstädt, V. Microcellular to Nanocellular Polymer Foams: Progress (2004-2015) and Future Directions - A Review. Eur. Polym. J. 2015, 73, 500–519. DOI: https://doi.org/10.1016/j.eurpolymj.2015.11.001.
- Jacobs, L. J. M.; Kemmere, M. F.; Keurentjes, J. T. F. Sustainable Polymer Foaming Using High Pressure Carbon Dioxide: A Review on Fundamentals, Processes and Applications. Green Chem. 2008, 10, 731–738. [Database] DOI: https://doi.org/10.1039/b801895b.
- Costeux, S. CO2-Blown Nanocellular Foams. J. Appl. Polym. Sci. 2014, 131, n/a–n/a. DOI: https://doi.org/10.1002/app.41293.
- Forest, C.; Chaumont, P.; Cassagnau, P.; Swoboda, B.; Sonntag, P. Polymer Nano-Foams for Insulating Applications Prepared from CO2 Foaming. Prog. Polym. Sci. 2015, 41, 122–145. DOI: https://doi.org/10.1016/j.progpolymsci.2014.07.001.
- Sauceau, M.; Fages, J.; Common, A.; Nikitine, C.; Rodier, E. New Challenges in Polymer Foaming: A Review of Extrusion Processes Assisted by Supercritical Carbon Dioxide. Prog. Polym. Sci. 2011, 36, 749–766. DOI: https://doi.org/10.1016/j.progpolymsci.2010.12.004.
- Jacobs, M. A.; Kemmere, M. F.; Keurentjes, J. T. F. Foam Processing of Poly(Ethylene-co-Vinyl Acetate) Rubber Using Supercritical Carbon Dioxide. Polymer. 2004, 45, 7539–7547. DOI: https://doi.org/10.1016/j.polymer.2004.08.061.
- Zhai, W. T.; Leung, S. N.; Wang, L.; Naguib, H. E.; Park, C. B. Preparation of Microcellular Poly(Ethylene-co-Octene) Rubber Foam with Supercritical Carbon Dioxide. J. Appl. Polym. Sci. 2010, 116, 1994–2004.
- Prissok, F.; Braun, F. Foams Based on Theremoplastic Polyurethanes. US20100222442A1, 2010.
- Prissok, F.; Schuette, M.; Braun, F. Hybrid Systems Consisting of Foamed Thermoplastic Elastomers and Polyurethanes. US 20150252163A1, 2015.
- Zhang, X. H.; Zhai, W. T. Coloured TPU Foam Material, Preparation Method and Use Thereof, as well as Method for Preparing Shaped Body, Sheet and Shoe Material by Using Same. US10035894B2, 2016.
- Jiang, R.; Yao, S.; Chen, Y. C.; Liu, T.; Xu, Z. M.; Park, C. B.; Zhao, L. Effect of Chain Topological Structure on the Crystallization, Rheological Behavior and Foamability of TPEE Using Supercritical CO2 as a Blowing Agent. J. Supercrit. Fluids 2019, 147, 48–58. DOI: https://doi.org/10.1016/j.supflu.2019.02.006.
- Jiang, R.; Chen, Y. C.; Yao, S.; Liu, T.; Xu, Z. M.; Park, C. B.; Zhao, L. Preparation and Characterization of High Melt Strength Thermoplastic Polyester Elastomer with Different Topological Structure Using a Two-Step Functional Group Reaction. Polymer 2019, 179, 121628. DOI: https://doi.org/10.1016/j.polymer.2019.121628.
- Jiang, R.; Liu, T.; Xu, Z. M.; Park, C. B.; Zhao, L. Improving the Continuous Microcellular Extrusion Foaming Ability with Supercritical CO2 of Thermoplastic Polyether Ester Elastomer through in-Situ Fibrillation of Polytetrafluoroethylene. Polymers 2019, 11, 1983–1998. DOI: https://doi.org/10.3390/polym11121983.
- Wang, G. L.; Zhao, G. Q.; Dong, G. W.; Mu, Y.; Park, C. B.; Wang, G. Z. Lightweight, Super-Elastic, and Thermal-Sound Insulation Bio-Based PEBA Foams Fabricated by High-Pressure Foam Injection Molding with Mold-Opening. Eur. Polym. J 2018, 103, 68–79. DOI: https://doi.org/10.1016/j.eurpolymj.2018.04.002.
- Barzegari, M. R.; Hossieny, N.; Jahani, D.; Park, C. B. Characterization of Hard-Segment Crystalline Phase of Poly(Ether-Block-Amide) (PEBAX ®) Thermoplastic Elastomers in the Presence of Supercritical CO2 and Its Impact on Foams. Polymer 2017, 114, 15–27. DOI: https://doi.org/10.1016/j.polymer.2017.02.088.
- Raps, D.; Hossieny, N.; Park, C. B.; Altstädt, V. Past and Present Developments in Polymer Bead Foams and Bead Foaming Technology. Polymer 2015, 56, 5–19. DOI: https://doi.org/10.1016/j.polymer.2014.10.078.
- Ge, C. B.; Ren, Q.; Wang, S. P.; Zheng, W. G.; Zhai, W. T.; Park, C. B. Steam-Chest Molding of Expanded Thermoplastic Polyurethane Bead Foams and Their Mechanical Properties. Chem. Eng. Sci. 2017, 174, 337–346. DOI: https://doi.org/10.1016/j.ces.2017.09.011.
- Zhang, R.; Huang, K.; Hu, S. F.; Liu, Q. T.; Zhao, X. P.; Liu, Y. Improved Cell Morphology and Reduced Shrinkage Ratio of ETPU Beads by Reactive Blending. Polym. Test 2017, 63, 38–46. DOI: https://doi.org/10.1016/j.polymertesting.2017.08.007.
- Hossieny, N. J.; Barzegari, M. R.; Nofar, M.; Mahmood, S. H.; Park, C. B. Crystallization of Hard Segment Domains with the Presence of Butane for Microcellular Thermoplastic Polyurethane Foams. Polymer 2014, 55, 651–662. DOI: https://doi.org/10.1016/j.polymer.2013.12.028.
- Jiang, X. L.; Zhao, L.; Feng, L. F.; Chen, C. P. Microcellular Thermoplastic Polyurethanes and Their Flexible Properties Prepared by Mold Foaming Process with Supercritical CO2. J. Cell. Plast. 2019, 55, 615–631. DOI: https://doi.org/10.1177/0021955X19864392.
- Köppl, T.; Raps, D.; Altstädt, V. E-PBT—Bead Foaming of Poly(Butylene Terephthalate) by Underwater Pelletizing. J. Cell. Plast. 2014, 50, 475–487. DOI: https://doi.org/10.1177/0021955X14528524.
- Shabani, A.; Fathi, A.; Erlwein, S.; Altstädt, V. Thermoplastic Polyurethane Foams: From Autoclave Batch Foaming to Bead Foam Extrusion. J. Cell. Plast. 2020, 0, 1–21.
- Standau, T.; Hädelt, B.; Schreier, P.; Altstädt, V. Development of a Bead Foam from an Engineering Polymer with Addition of Chain Extender: Expanded Polybutylene Terephthalate. Ind. Eng. Chem. Res. 2018, 57, 17170–17176. DOI: https://doi.org/10.1021/acs.iecr.8b04799.
- Shimbo, M.; Nomura, T. On Foaming Process of Vulcanized Rubber Using Physical Blowing Agent, Proceedings of ICAD 2004, 2004.
- Zheng, H.; Pan, G.; Huang, P. K.; Xu, D. H.; Zhai, W. T. Fundamental Influences of Crosslinking Structure on the Cell Morphology, Creep Property, Thermal Property, and Recycling Behavior of Microcellular EPDM Foams Blown with Compressed CO2. Ind. Eng. Chem. Res. 2020, 59, 1534–1548. DOI: https://doi.org/10.1021/acs.iecr.9b05611.
- Liao, X.; Xu, H.; Li, S. J.; Zhou, C. J.; Li, G. X.; Park, C. B. The Effects of Viscoelastic Properties on the Cellular Morphology of Silicone Rubber Foams Generated by Supercritical Carbon Dioxide. RSC Adv. 2015, 5, 106981–106988. DOI: https://doi.org/10.1039/C5RA22242G.
- Hong, I.-K.; Lee, S. Microcellular Foaming of Silicone Rubber with Supercritical Carbon Dioxide. Korean J. Chem. Eng. 2014, 31, 166–171. DOI: https://doi.org/10.1007/s11814-013-0188-3.
- Colton, J. S.; Suh, N. P. The Nucleation of Microcellular Thermoplastic Foam with Additives: Part II: Experimental Results and Discussion. Polym. Eng. Sci. 1987, 27, 493–499. DOI: https://doi.org/10.1002/pen.760270703.
- Colton, J. S.; Suh, N. P. Nucleation of Microcellular Foam: Theory and Practice. Polym. Eng. Sci. 1987, 27, 500–503. [Database] DOI: https://doi.org/10.1002/pen.760270704.
- Colton, J. S.; Suh, N. P. The Nucleation of Microcellular Thermoplastic Foam with Additives: Part I: Theoretical Considerations. Polym. Eng. Sci. 1987, 27, 485–492. DOI: https://doi.org/10.1002/pen.760270702.
- Wong, A.; Wijnands, S. F. L.; Kuboki, T.; Park, C. B. Mechanisms of Nanoclay-Enhanced Plastic Foaming Processes: Effects of Nanoclay Intercalation and Exfoliation. J. Nanopart. Res. 2013, 15, 1815.
- Leung, S. N.; Wong, A.; Guo, Q. P.; Park, C. B.; Zong, J. H. Change in the Critical Nucleation Radius and Its Impact on Cell Stability during Polymeric Foaming Processes. Chem. Eng. Sci. 2009, 64, 4899–4907. DOI: https://doi.org/10.1016/j.ces.2009.07.025.
- Albalak, R. J.; Tadmor, Z.; Talmon, Y. Polymer Melt Devolatilization Mechanisms. AIChE J. 1990, 36, 1313–1320. DOI: https://doi.org/10.1002/aic.690360904.
- Wong, A.; Chu, R. K. M.; Leung, S. N.; Park, C. B.; Zong, J. H. A Batch Foaming Visualization System with Extensional Stress-Inducing Ability. Chem. Eng. Sci. 2011, 66, 55–63. DOI: https://doi.org/10.1016/j.ces.2010.09.038.
- Yarin, A. L.; Lastochkin, D.; Talmon, Y.; Tadmor, Z. Bubble Nucleation during Devolatilization of Polymer Melts. AIChE J. 1999, 45, 2590–2605. DOI: https://doi.org/10.1002/aic.690451216.
- Wong, A.; Park, C. B. The Effects of Extensional Stresses on the Foamability of Polystyrene-Talc Composites Blown with Carbon Dioxide. Chem. Eng. Sci. 2012, 75, 49–62. DOI: https://doi.org/10.1016/j.ces.2012.02.040.
- Wong, A.; Guo, Y. T.; Park, C. B. Fundamental Mechanisms of Cell Nucleation in Polypropylene Foaming with Supercritical Carbon Dioxide—Effects of Extensional Stresses and Crystals. J. Supercrit. Fluids 2013, 79, 142–151. DOI: https://doi.org/10.1016/j.supflu.2013.02.013.
- Guo, Q. P.; Wang, J.; Park, C. B.; Ohshima, M. A Microcellular Foaming Simulation System with a High Pressure-Drop Rate. Ind. Eng. Chem. Res. 2006, 45, 6153–6161. DOI: https://doi.org/10.1021/ie060105w.
- Leung, S. N.; Wong, A.; Wang, L. C.; Park, C. B. Mechanism of Extensional Stress-Induced Cell Formation in Polymeric Foaming Processes with the Presence of Nucleating Agents. J. Supercrit. Fluids 2012, 63, 187–198. DOI: https://doi.org/10.1016/j.supflu.2011.12.018.
- Wang, C.; Leung, S. N.; Bussmann, M.; Zhai, W. T.; Park, C. B. Numerical Investigation of Nucleating-Agent-Enhanced Heterogeneous Nucleation. Ind. Eng. Chem. Res. 2010, 49, 12783–12792. DOI: https://doi.org/10.1021/ie1017207.
- Ji, G. Y.; Zhai, W. T.; Lin, D. P.; Ren, Q.; Zheng, W. G.; Jung, D. W. Microcellular Foaming of Poly(Lactic Acid)/Silica Nanocomposites in Compressed CO2: Critical Influence of Crystallite Size on Cell Morphology and Foam Expansion. Ind. Eng. Chem. Res. 2013, 52, 6390–6398. DOI: https://doi.org/10.1021/ie302281c.
- Ren, Q.; Wang, J. J.; Zhai, W. T.; Su, S. P. Solid State Foaming of Poly(Lactic Acid) Blown with Compressed CO2: Influences of Long Chain Branching and Induced Crystallization on Foam Expansion and Cell Morphology. Ind. Eng. Chem. Res. 2013, 52, 13411–13421. DOI: https://doi.org/10.1021/ie402039y.
- Zhai, W. T.; Ko, Y.; Zhu, W. L.; Wong, A.; Park, C. B. A Study of the Crystallization, Melting, and Foaming Behaviors of Polylactic Acid in Compressed CO2. Int. J. Mol. Sci. 2009, 10, 5381–5397. DOI: https://doi.org/10.3390/ijms10125381.
- Jia, P.; Hu, J.; Zhai, W. T.; Duan, Y. X.; Zhang, J. M.; Han, C. Y. Cell Morphology and Improved Heat Resistance of Microcellular Poly(L-Lactide) Foam via Introducing Stereocomplex Crystallites of PLA. Ind. Eng. Chem. Res. 2015, 54, 2476–2488. DOI: https://doi.org/10.1021/ie504345y.
- Oda, T.; Saito, H. Exclusion Effect of Carbon Dioxide on the Crystallization of Polypropylene. J. Polym. Sci. B Polym. Phys. 2004, 42, 1565–1572. DOI: https://doi.org/10.1002/polb.20076.
- Taki, K.; Kitano, D.; Ohshima, M. Effect of Growing Crystalline Phase on Bubble Nucleation in Poly(L-Lactide)/CO2 Batch Foaming. Ind. Eng. Chem. Res. 2011, 50, 3247–3252. DOI: https://doi.org/10.1021/ie101637f.
- Hossieny, N.; Shaayegan, V.; Ameli, A.; Saniei, M.; Park, C. B. Characterization of Hard-Segment Crystalline Phase of Thermoplastic Polyurethane in the Presence of Butane and Glycerol Monosterate and Its Impact on Mechanical Property and Microcellular Morphology. Polymer 2017, 112, 208–218. DOI: https://doi.org/10.1016/j.polymer.2017.02.015.
- Lee, S. T. Shear Effects on Thermoplastic Foam Nucleation. Polym. Eng. Sci. 1993, 33, 418–422. DOI: https://doi.org/10.1002/pen.760330707.
- Wong, A.; Park, C. B. A Visualization System for Observing Plastic Foaming Processes under Shear Stress. Polym. Test 2012, 31, 417–424. DOI: https://doi.org/10.1016/j.polymertesting.2011.12.012.
- Azimi, H. R.; Rezaei, M. Solubility and Diffusivity of Carbon Dioxide in St-MMA Copolymers. J. Chem. Thermodynamics 2013, 58, 279–287. DOI: https://doi.org/10.1016/j.jct.2012.11.025.
- Handa, Y. P.; Zhang, Z. A Novel Stress-Induced Nucleation and Foaming Process and Its Applications in Making Homogeneous Foams, Anisotropic Foams and Multilayered Foams. Cell. Polym. 2000, 19, 77–91.
- Zhai, W. T.; Yu, J.; He, J. S. Ultrasonic Irradiation Enhanced Cell Nucleation: An Effective Approach to Microcellular Foams of Both High Cell Density and Expansion Ratio. Polymer 2008, 49, 2430–2434. DOI: https://doi.org/10.1016/j.polymer.2008.04.002.
- Wang, J.; Zhai, W. T.; Ling, J. Q.; Shen, B.; Zheng, W. G.; Park, C. B. Ultrasonic Irradiation Enhanced Cell Nucleation in Microcellular Poly(Lactic Acid): a Novel Approach to Reduce Cell Size Distribution and Increase Foam Expansion. Ind. Eng. Chem. Res. 2011, 50, 13840–13847. DOI: https://doi.org/10.1021/ie201643j.
- Wang, G. L.; Zhao, J. C.; Yu, K. J.; Mark, L. H.; Wang, G. Z.; Gong, P. J.; Park, C. B.; Zhao, G. Q. Role of Elastic Strain Energy in Cell Nucleation of Polymer Foaming and Its Application for Fabricating Sub-Microcellular TPU Microfilms. Polymer 2017, 119, 28–39. DOI: https://doi.org/10.1016/j.polymer.2017.05.016.
- Kim, Y.; Park, C. B.; Chen, P.; Thompson, R. B. Origins of the Failure of Classical Nucleation Theory for Nanocellular Polymer Foams. Soft Matter 2011, 7, 7351–7358. DOI: https://doi.org/10.1039/c1sm05575e.
- Khan, I.; Adrian, D.; Costeux, S. A Model to Predict the Cell Density and Cell Size Distribution in Nano-Cellular Foams. Chem. Eng. Sci. 2015, 138, 634–645. DOI: https://doi.org/10.1016/j.ces.2015.08.029.
- Xu, X. F.; Cristancho, D. E.; Costeux, S.; Wang, Z. G. Bubble Nucleation in Polymer–CO2 Mixtures. Soft Matter. 2013, 9, 9675–9683. DOI: https://doi.org/10.1039/c3sm51477c.
- Zhai, W. T.; Wang, J.; Chen, N.; Naguib, H. E.; Park, C. B. The Orientation of Carbon Nanotubes in Poly(Ethylene-co-Octene) Microcellular Foaming and Its Suppression Effect on Cell Coalescence. Polym. Eng. Sci. 2012, 52, 2078–2089. DOI: https://doi.org/10.1002/pen.23157.
- Zhao, D.; Wang, G. D.; Wang, M. H. Investigation of the Effect of Foaming Process Parameters on Expanded Thermoplastic Polyurethane Bead Foams Properties Using Response Surface Methodology. J. Appl. Polym. Sci. 2018, 135, 46327–46337. DOI: https://doi.org/10.1002/app.46327.
- Drobny, J. G. Handbook of Thermoplastic Elastomers; Elsevier: Oxford, 2014.
- Arora, K. A.; Lesser, A. J.; McCarthy, T. J. Preparation and Characterization of Microcellular Polystyrene Foams Processed in Supercritical Carbon Dioxide. Macromolecules 1998, 31, 4614–4620. DOI: https://doi.org/10.1021/ma971811z.
- Xu, Z. M.; Jiang, X. L.; Liu, T.; Hu, G. H.; Zhao, L.; Zhu, Z. N.; Yuan, W. K. Foaming of Polypropylene with Supercritical Carbon Dioxide. J. Supercrit. Fluids 2007, 41, 299–310. DOI: https://doi.org/10.1016/j.supflu.2006.09.007.
- Tang, L. Q.; Zhai, W. T.; Zheng, W. G. Autoclave Preparation of Expanded Polypropylene/Poly(Lactic Acid) Blend Bead Foams with a Batch Foaming Process. J. Cell. Plast. 2011, 47, 429–446. DOI: https://doi.org/10.1177/0021955X11406004.
- Vahidifar, A.; Esmizadeh, E.; Rodrigue, D.; Khonakdar, H. A.; Wagenknecht, U. Towards Novel Super-Elastic Foams Based on Isoperene Rubber: Preparation and Characterization. Polym. Adv. Technol. 2020, 31, 1508–1518. DOI: https://doi.org/10.1002/pat.4880.
- Sharudin, R. W. B.; Ohshima, M. Preparation of Microcellular Thermoplastic Elastomer Foams from Polystyrene-b-Ethylene-Butylene-b-Polystyrene (SEBS) and Their Blends with Polystyrene. J. Appl. Polym. Sci. 2013, 128, 2245–2254. DOI: https://doi.org/10.1002/app.38104.
- Ji, Z. Y.; Ma, J. Z.; Qin, X.; Wu, Y. K.; Xu, R.; Ma, Z. L.; Xue, C. H.; Qin, J. B.; Shao, L. Improved Dimensional Stability of Styrene Butadiene Rubber/Ethylene Vinyl Acetate Composite Foams with Skeleton Support Structure Based on Alternately Cross-Linking Process. Polymer 2018, 157, 103–110. DOI: https://doi.org/10.1016/j.polymer.2018.10.028.
- Tang, W. Y.; Liao, X.; Zhang, Y.; Li, J. S.; Wang, G.; Li, G. X. Mechanical-Microstructure Relationship and Cellular Failure Mechanism of Silicone Rubber Foam by the Cell Microstructure Designed in Supercritical CO2. J. Phys. Chem. C. 2019, 123, 26947–26956. DOI: https://doi.org/10.1021/acs.jpcc.9b06992.
- Zhang, H.; Liu, T.; Li, B.; Li, H.; Cao, Z.; Jin, G.; Zhao, L.; Xin, Z. Foaming and Dimensional Stability of LDPE Foams with N2, CO2, i-C4H10 and CO2 - N2 Mixtures as Blowing Agents. J. Supercrit. Fluids 2020, 164, 104930. DOI: https://doi.org/10.1016/j.supflu.2020.104930.
- Zhang, H.; Fang, Z.; Liu, T.; Li, B.; Li, H.; Cao, Z.; Jin, G.; Zhao, L.; Xin, Z. Dimensional Stability of LDPE Foams with CO2 + i-C4H10 Mixtures as Blowing Agent: Experimental and Numerical Simulation. Ind. Eng. Chem. Res. 2019, 58, 13154–13162. DOI: https://doi.org/10.1021/acs.iecr.9b02501.
- Wong, A.; Mark, L. H.; Hasan, M. M.; Park, C. B. The Synergy of Supercritical CO2 and Supercritical N2 in Foaming of Polystyrene for Cell Nucleation. J. Supercrit. Fluids 2014, 90, 35–43. DOI: https://doi.org/10.1016/j.supflu.2014.03.001.
- Li, R. S.; Lee, J. H.; Wang, C. D.; Mark, L. H.; Park, C. B. Solubility and Diffusivity of CO2 and N2 in TPU and Their Effects on Cell Nucleation in Batch Foaming. J. Supercrit. Fluids 2019, 154, 104623. DOI: https://doi.org/10.1016/j.supflu.2019.104623.
- Li, G.; Gunkel, F.; Wang, J.; Park, C. B.; Altstädt, V. Solubility Measurements of N2 and CO2 in Polypropylene and Ethene/Octene Copolymer. J. Appl. Polym. Sci. 2007, 103, 2945–2953. DOI: https://doi.org/10.1002/app.25163.
- Ushiki, I.; Hayashi, S.; Kihara, S-i.; Takishima, S. Solubilities and Diffusion Coefficients of Carbon Dioxide and Nitrogen in Poly(Methyl Methacrylate) at High Temperatures and Pressures. J. Supercrit. Fluids 2019, 152, 104565. DOI: https://doi.org/10.1016/j.supflu.2019.104565.
- Krause, B.; Mettinkhof, R.; van der Vegt, N. F. A.; Wessling, M. Microcellular Foaming of Amorphous High-Tg Polymers Using Carbon Dioxide. Macromolecules 2001, 34, 874–884. DOI: https://doi.org/10.1021/ma001291z.
- Ge, C. B.; Wang, S. P.; Zhai, W. T. Influence of Cell Type and Skin-Core Structure on the Tensile Elasticity of the Microcellular Thermoplastic Polyurethane Foam. J. Cell. Plast 2020, 56, 207–226. DOI: https://doi.org/10.1177/0021955X19864381.
- Ge, C. B.; Zhai, W. T. Cellular Thermoplastic Polyurethane Thin Film: Preparation, Elasticity, and Thermal Insulation Performance. Ind. Eng. Chem. Res. 2018, 57, 4688–4696. DOI: https://doi.org/10.1021/acs.iecr.7b05037.
- Chu, C. C.; Yeh, S. K.; Peng, S. P.; Kang, T. W.; Guo, W. J.; Yang, J. T. Preparation of Microporous Thermoplastic Polyurethane by Low-Temperature Supercritical CO2 Foaming. J. Cell. Plast 2017, 53, 135–150. DOI: https://doi.org/10.1177/0021955X16639034.
- Cao, Y. Y.; Pang, Y. Y.; Dong, X.; Wang, D. J.; Zheng, W. G. Cell Structure Variation in Poly(Ether-mb-Amide) Copolymer Foams Induced by Chemi-Crystallization. Ind. Eng. Chem. Res. 2020, 59, 11340–11349. DOI: https://doi.org/10.1021/acs.iecr.0c01580.
- Sarver, J. A.; Sumey, J. L.; Williams, M. L.; Bishop, J. P.; Dean, D. M.; Kiran, E. Foaming of Poly(Ethylene-co-Vinyl Acetate) and Poly(Ethylene-co-Vinyl Acetate-co-Carbon Monoxide) and Their Blends with Carbon Dioxide. J. Appl. Polym. Sci. 2018, 135, 45841–45864. DOI: https://doi.org/10.1002/app.45841.
- Ding, M. J.; Cao, X. W.; Liang, J. F.; He, G. J. Study on Foaming Properties of Thermoplastic Polyolefin Elastomer with Supercritical CO2. China Plast 2019, 33, 1–5.
- Wang, G. L.; Wan, G. P.; Chai, J. L.; Li, B.; Zhao, G. Q.; Mu, Y.; Park, C. B. Structure-Tunable Thermoplastic Polyurethane Foams Fabricated by Supercritical Carbon Dioxide Foaming and Their Compressive Mechanical Properties. J. Supercrit. Fluids 2019, 149, 127–137. DOI: https://doi.org/10.1016/j.supflu.2019.04.004.
- Nohara, T.; Shinohara, M.; Chiba, T.; Oikawa, M. Process for Producing Molded Article of Expanded Polyolefin-Based Resin Beads, and Molded Article of Expanded Polyolefin-Based Resin Beads US9079360B2, 2015.
- Christian, M.; Klaus, H.; Isidor, D. G.; Gerd, E.; Josef, D. F. Particle-Shaped, Expandable Olefin Polymers. EP1228127B1, 2005.
- Toru, Y. Polypropylene-Based Resin In-Mold Foam Molding and Method for Producing the Same. JP2013144733A, 2013.
- Füssi, A.; Sampath, B.; Hofmann, M.; Bellin, I.; Nalawade, S.; Hahn, K.; Künkel, A. Loos, R. Method for Producing Expandable Granulates Containing Polylactic Acid. US20130150468A1, 2013.
- Britton, R. N.; Doormalen, F. A. H. C. V.; Noordegraaf, J.; Molenveld, K.; Schennink, G. G. J. Coated Particulate Expandable Polylactic Acid. US8268901B2, 2012.
- Lan, X. Q.; Zhai, W. T.; Zheng, W. G. Critical Effects of Polyethylene Addition on the Autoclave Foaming Behavior of Polypropylene and the Melting Behavior of Polypropylene Foams Blown with n-Pentane and CO2. Ind. Eng. Chem. Res. 2013, 52, 5655–5665. DOI: https://doi.org/10.1021/ie302899m.
- Nofar, M.; Guo, Y. T.; Park, C. B. Double Crystal Melting Peak Generation for Expanded Polypropylene Bead Foam Manufacturing. Ind. Eng. Chem. Res. 2013, 52, 2297–2303. DOI: https://doi.org/10.1021/ie302625e.
- Guo, Y. T.; Hossieny, N.; Chu, R. K. M.; Park, C. B.; Zhou, N. Q. Critical Processing Parameters for Foamed Bead Manufacturing in a Lab-Scale Autoclave System. Chem. Eng. J. 2013, 214, 180–188. DOI: https://doi.org/10.1016/j.cej.2012.10.043.
- Zhai, W. T.; Kim, Y. W.; Park, C. B. Steam-Chest Molding of Expanded Polypropylene Foams. 1. DSC Simulation of Bead Foam Processing. Ind. Eng. Chem. Res. 2010, 49, 9822–9829. DOI: https://doi.org/10.1021/ie101085s.
- Zhai, W. T.; Kim, Y. W.; Jung, D. W.; Park, C. B. Steam-Chest Molding of Expanded Polypropylene Foams. 2. Mechanism of Interbead Bonding. Ind. Eng. Chem. Res. 2011, 50, 5523–5531. DOI: https://doi.org/10.1021/ie101753w.
- Joacobs, P. Method for Producing Three Dimensional Foam Articles WO2015177571Al, 2015.
- Lee, S.-T.; Scholz, D. Polymeric Foams: Technology and Developments in Regulation. Process, and Products; CRC Press: Boca Raton, 2008.
- Tessanan, W.; Phinyocheep, P.; Daniel, P.; Gibaud, A. Microcellular Natural Rubber Using Supercritical CO2 Technology. J. Supercrit. Fluids 2019, 149, 70–78. DOI: https://doi.org/10.1016/j.supflu.2019.03.022.
- Zhang, Z. X.; Dai, X. R.; Zou, L.; Wen, S. B.; Sinha, T. K.; Li, H. A Developed, Eco-Friendly, and Flexible Thermoplastic Elastomeric Foam from SEBS for Footwear Application. Express Polym. Lett. 2019, 13, 948–958. DOI: https://doi.org/10.3144/expresspolymlett.2019.83.
- Wang, D.; Prakashan, K.; Xia, L.; Xin, Z. X.; Zhang, Z. X. Foaming of trans-Polyisoprene Using N2 as the Blowing Agent. Polym. Adv. Technol. 2018, 29, 716–725. DOI: https://doi.org/10.1002/pat.4177.
- Zhang, Z. X.; Zhang, T.; Wang, D.; Zhang, X.; Xin, Z. X.; Prakashan, K. Physicomechanical, Friction, and Abrasion Properties of EVA/PU Blend Foams Foamed by Supercritical Nitrogen. Polym. Eng. Sci. 2018, 58, 673–682. DOI: https://doi.org/10.1002/pen.24598.
- Nofar, M.; Kucuk, E. B.; Bati, B. Effect of Hard Segment Content on the Microcellular Foaming Behavior of TPU Using Supercritical CO2. J. Supercrit. Fluids 2019, 153, 104590. DOI: https://doi.org/10.1016/j.supflu.2019.104590.
- Li, J. S.; Liao, X.; Jiang, Q. Y.; Wang, W.; Li, G. X. Creating Orientated Cellular Structure in Thermoplastic Polyurethane through Strong Interfacial Shear Interaction and Supercritical Carbon Dioxide Foaming for Largely Improving the Foam Compression Performance. J. Supercrit. Fluids 2019, 153, 104577–104591. DOI: https://doi.org/10.1016/j.supflu.2019.104577.
- Ghariniyat, P.; Leung, S. N. Development of Thermally Conductive Thermoplastic Polyurethane Composite Foams via CO2 Foaming-Assisted Filler Networking. Compos. Part B 2018, 143, 9–18. DOI: https://doi.org/10.1016/j.compositesb.2018.02.008.
- Dai, X. H.; Liu, Z. M.; Wang, Y.; Yang, G. Y.; Xu, J.; Han, B. X. High Damping Property of Microcellular Polymer Prepared by Friendly Environmental Approach. J. Supercrit. Fluids 2005, 33, 259–267. DOI: https://doi.org/10.1016/j.supflu.2004.08.003.
- Chen, J. Z.; Wang, Y. Q.; Chen, S. H.; Wang, X. D.; Zhou, H. F. Study on Hard-Segment Crystallization and Foaming Behaviors of TPU Assisted with Supercritical Carbon Dioxide. China Plast 2019, 33, 39–42.
- Yeh, S.-K.; Chen, Y.-R.; Kang, T.-W.; Tseng, T.-J.; Peng, S.-P.; Chu, C.-C.; Rwei, S.-P.; Guo, W.-J. Different Approaches for Creating Nanocellular TPU Foams by Supercritical CO2 Foaming. J. Polym. Res. 2017, 25, 30–41.
- Jiang, R.; Hu, D. D.; Liu, T.; Zhao, L. Effect of Hard Segment Content on Microcellular Foaming Process of Thermoplastic Polyether Ester Elastomer Using Supercritical CO2 as Blowing Agent. CIESC J. 2020, 71, 871–878.
- Reinhardt, S. D.; Wood, D. M.; Wardlaw, A.; Robinson, T. K.; Whiteman, J. Soles for Sports Shoes US9788598B2, 2017.
- Huang, K.; Zhang, R.; Liu, Y.; Liu, Q. T.; Hu, S. F. Preparation and Properties of Thermoplastic Polyurethane/Polyvinyl Chloride Foam Beads. Polym. Mater. Sci. Eng 2018, 34, 126–131.
- Qu, Z. J.; Mi, J. G.; Jiao, Y.; Zhou, H. F.; Wang, X. D. Microcellular Morphology Evolution of Polystyrene/Thermoplastic Polyurethane Blends in the Presence of Supercritical CO2. Cell. Polym 2019, 38, 68–85. DOI: https://doi.org/10.1177/0262489319852335.
- Bernardo, V.; Martin-de Leon, J.; Sanchez-Calderon, I.; Laguna-Gutierrez, E.; Rodriguez-Perez, M. A. Nanocellular Polymers with a Gradient Cellular Structure Based on Poly(Methyl Methacrylate)/Thermoplastic Polyurethane Blends Produced by Gas Dissolution Foaming. Macromol. Mater. Eng. 2020, 305, 1900428–1900436. DOI: https://doi.org/10.1002/mame.201900428.
- Qu, Z. J.; Yin, D. X.; Zhou, H. F.; Wang, X. D.; Zhao, S. Cellular Morphology Evolution in Nanocellular Poly (Lactic Acid)/Thermoplastic Polyurethane Blending Foams in the Presence of Supercritical N2. Eur. Polym. J 2019, 116, 291–301. DOI: https://doi.org/10.1016/j.eurpolymj.2019.03.046.
- Yu, C.-T.; Lai, C.-C.; Wang, F.-M.; Liu, L.-C.; Liang, W.-C.; Wu, C.-L.; Chiu, J.-C.; Liu, H.-C.; Hsiao, H.-T.; Chen, C.-M. Fabrication of Thermoplastic Polyurethane (TPU)/Thermoplastic Amide Elastomer (TPAE) Composite Foams with Supercritical Carbon Dioxide and Their Mechanical Properties. J. Manuf. Process 2019, 48, 127–136. DOI: https://doi.org/10.1016/j.jmapro.2019.09.022.
- Wang, G. L.; Zhao, J. C.; Mark, L. H.; Wang, G. Z.; Yu, K. J.; Wang, C. D.; Park, C. B.; Zhao, G. Q. Ultra-Tough and Super Thermal-Insulation Nanocellular PMMA/TPU. Chem. Eng. J 2017, 325, 632–646. DOI: https://doi.org/10.1016/j.cej.2017.05.116.
- Xu, D. F.; Yu, K. J.; Qian, K.; Park, C. B. Foaming Behavior of Microcellular Poly(Lactic Acid)/TPU Composites in Supercritical CO2. J. Thermoplast. Compos. Mater. 2018, 31, 61–78. DOI: https://doi.org/10.1177/0892705716679480.
- Qi, H. J.; Boyce, M. C. Stress-Strain Behavior of Thermoplastic Polyurethanes. Mech. Mater 2005, 37, 817–839. [Database] DOI: https://doi.org/10.1016/j.mechmat.2004.08.001.
- Ito, S.; Matsunaga, K.; Tajima, M.; Yoshida, Y. Generation of Microcellular Polyurethane with Supercritical Carbon Dioxide. J. Appl. Polym. Sci. 2007, 106, 3581–3586. [Database] DOI: https://doi.org/10.1002/app.26854.
- Ge, C. B.; Zhai, W. T.; Park, C. B. Preparation of Thermoplastic Polyurethane (TPU) Perforated Membrane via CO2 Foaming and Its Particle Separation Performance. Polymers 2019, 11, 847–862. DOI: https://doi.org/10.3390/polym11050847.
- Ge, C. B.; Wang, S. P.; Zheng, W. G.; Zhai, W. T. Preparation of Microcellular Thermoplastic Polyurethane (TPU) Foam and Its Tensile Property. Polym. Eng. Sci. 2018, 58, E158–E166. DOI: https://doi.org/10.1002/pen.24813.
- Liao, X.; Nawaby, A. V.; Whitfield, P.; Day, M.; Champagne, M.; Denault, J. Layered Open Pore Poly(L-Lactic Acid) Nanomorphology. Biomacromolecules 2006, 7, 2937–2941. DOI: https://doi.org/10.1021/bm060738u.
- Zimmermann, M. V. G.; Zattera, A. J.; Santana, R. M. C. Nanocomposites Foams of Poly(Ethylene-co-Vinyl Acetate) with Short and Long Nanocellulose Fibers and Foaming with Supercritical CO2. Polym. Bull. 2018, 75, 1789–1807. DOI: https://doi.org/10.1007/s00289-017-2123-y.
- Nemoto, T.; Takagi, J.; Ohshima, M. Nanoscale Cellular Foams from a Poly(Propylene)-Rubber Blend. Macromol. Mater. Eng. 2008, 293, 991–998. DOI: https://doi.org/10.1002/mame.200800184.
- Ahmed, M. F.; Li, Y.; Yao, Z.; Cao, K.; Zeng, C. C. TPU/PLA Blend Foams: Enhanced Foamability, Structural Stability, and Implications for Shape Memory Foams. J. Appl. Polym. Sci. 2019, 136, 47416–47427. DOI: https://doi.org/10.1002/app.47416.
- Kim, S. G.; Leung, S. N.; Park, C. B.; Sain, M. The Effect of Dispersed Elastomer Particle Size on Heterogeneous Nucleation of TPO with N2 Foaming. Chem. Eng. Sci 2011, 66, 3675–3686. DOI: https://doi.org/10.1016/j.ces.2011.05.003.
- McCallum, T. J.; Kontopoulou, M.; Park, C. B.; Wong, A.; Kim, S. G. Effect of Branched PP Content on the Physical Properties and Cell Growth during Foaming of TPOs. J. Appl. Polym. Sci. 2008, 110, 817–824. DOI: https://doi.org/10.1002/app.28648.
- Wong, S.; Naguib, H. E.; Park, C. B. Effect of Processing Parameters on the Cellular Morphology and Mechanical Properties of Thermoplastic Polyolefin (TPO) Microcellular Foams. Adv. Polym. Technol. 2007, 26, 232–246. DOI: https://doi.org/10.1002/adv.20104.
- Wang, S. P.; Xue, S. W.; Ge, C. B.; Ren, Q.; Zhao, D.; Zhai, W. T. Preparation of Fluorescent Thermoplastic Polyurethane Microcellular Foam Films Blown by Supercritical CO2. J. Cell. Plast. 2019, 55, 483–505. DOI: https://doi.org/10.1177/0021955X19841053.
- Chen, Y.; Weng, C. L.; Wang, Z.; Maertens, T.; Fan, P.; Chen, F.; Zhong, M. Q.; Tan, J.; Yang, J. T. Preparation of Polymeric Foams with Bimodal Cell Size: An Application of Heterogeneous Nucleation Effect of Nanofillers. J. Supercrit. Fluids 2019, 147, 107–115. DOI: https://doi.org/10.1016/j.supflu.2019.02.015.
- Xiao, S. P.; Huang, H. X. Generation of Nanocellular TPU/Reduced Graphene Oxide Nanocomposite Foams with High Cell Density by Manipulating Viscoelasticity. Polymer 2019, 183, 121879–121886. DOI: https://doi.org/10.1016/j.polymer.2019.121879.
- Yeh, S.-K.; Liu, Y.-C.; Chu, C.-C.; Chang, K.-C.; Wang, S.-F. Mechanical Properties of Microcellular and Nanocellular Thermoplastic Polyurethane Nanocomposite Foams Created Using Supercritical Carbon Dioxide. Ind. Eng. Chem. Res. 2017, 56, 8499–8507. DOI: https://doi.org/10.1021/acs.iecr.7b00942.
- Yeh, S.-K.; Liu, Y.-C.; Wu, W.-Z.; Chang, K.-C.; Guo, W.-J.; Wang, S.-F. Thermoplastic Polyurethane/Clay Nanocomposite Foam Made by Batch Foaming. J. Cell. Plast 2013, 49, 119–130. DOI: https://doi.org/10.1177/0021955X13477432.
- Chang, Y.-W.; Lee, D.; Bae, S.-Y. Preparation of Polyethylene-Octene Elastomer/Clay Nanocomposite and Microcellular Foam Processed in Supercritical Carbon Dioxide. Polym. Int. 2006, 55, 184–189. DOI: https://doi.org/10.1002/pi.1936.
- Nemoto, T.; Takagi, J.; Ohshima, M. Control of Bubble Size and Location in Nano-/Microscale Cellular Poly(Propylene)/Rubber Blend Foams. Macromol. Mater. Eng. 2008, 293, 574–580. DOI: https://doi.org/10.1002/mame.200800015.
- Di Maio, E.; Kiran, E. Foaming of Polymers with Supercritical Fluids and Perspectives on the Current Knowledge Gaps and Challenges. J. Supercrit. Fluids 2018, 134, 157–166. DOI: https://doi.org/10.1016/j.supflu.2017.11.013.
- Jia, Y. L.; Xiang, B.; Zhang, W. H.; Liu, T.; Luo, S. K. Microstructure and Properties of Microcellular Silicone Rubber Foams with Improved Surface Quality. Polym. J. 2020, 52, 207–216. DOI: https://doi.org/10.1038/s41428-019-0249-5.
- Xiang, B.; Jia, Y. L.; Lei, Y. J.; Zhang, F. S.; He, J. P.; Liu, T.; Luo, S. K. Mechanical Properties of Microcellular and Nanocellular Silicone Rubber Foams Obtained by Supercritical Carbon Dioxide. Polym. J. 2019, 51, 559–568. DOI: https://doi.org/10.1038/s41428-019-0175-6.
- Xiang, B.; Deng, Z. P.; Zhang, F. S.; Wen, N.; Lei, Y. J.; Liu, T.; Luo, S. K. Microcellular Silicone Rubber Foams: The Influence of Reinforcing Agent on Cellular Morphology and Nucleation. Polym. Eng. Sci. 2019, 59, 5–14. DOI: https://doi.org/10.1002/pen.24857.
- Tang, W. Y.; Bai, J. W.; Liao, X.; Xiao, W.; Luo, Y.; Yang, Q.; Li, G. X. Carbon Nanotube-Reinforced Silicone Rubber Nanocomposites and the Foaming Behavior in Supercritical Carbon Dioxide. J. Supercrit. Fluids 2018, 141, 78–87. DOI: https://doi.org/10.1016/j.supflu.2018.01.001.
- Yang, Q.; Yu, H. T.; Song, L. X.; Lei, Y. J.; Zhang, F. S.; Lu, A.; Liu, T.; Luo, S. K. Solid-State Microcellular High Temperature Vulcanized (HTV) Silicone Rubber Foam with Carbon Dioxide. J. Appl. Polym. Sci 2017, 134, 44807–44815. DOI: https://doi.org/10.1002/app.44807.
- Yan, H.; Wang, K.; Zhao, Y. Fabrication of Silicone Rubber Foam with Tailored Porous Structures by Supercritical CO2. Macromol. Mater. Eng. 2017, 302, 1600377–1600387. DOI: https://doi.org/10.1002/mame.201600377.
- Liu, T.; Lei, Y. J.; Zhang, F. S.; Guo, S. Y.; Luo, S. K. Microcellular Crosslinked Silicone Rubber Foams: Influence of Nucleation Agent (Polyhedral Oligomeric Silsesquioxane) on the Rheological, Vulcanizing, Cell Morphological Properties. Polymer. Plast. Technol. Eng 2018, 57, 1623–1633. DOI: https://doi.org/10.1080/03602559.2017.1410845.
- Bai, J. W.; Liao, X.; Huang, E. B.; Luo, Y.; Yang, Q.; Li, G. X. Control of the Cell Structure of Microcellular Silicone Rubber/Nanographite Foam for Enhanced Mechanical Performance. Mater. Des 2017, 133, 288–298. DOI: https://doi.org/10.1016/j.matdes.2017.07.064.
- Xu, H.; He, Y. C.; Liao, X.; Luo, T. G.; Li, G. X.; Yang, Q.; Zhou, C. J. A Green and Structure-Controlled approach to the Generation of Silicone Rubber Foams by Means of Carbon Dioxide. Cell. Polym 2016, 35, 19–32. DOI: https://doi.org/10.1177/026248931603500102.
- Song, L. X.; Lu, A.; Feng, P. J.; Lu, Z. Y. Preparation of Silicone Rubber Foam Using Supercritical Carbon Dioxide. Mater. Lett 2014, 121, 126–128. DOI: https://doi.org/10.1016/j.matlet.2014.01.125.
- Zhan, Y. H.; Oliviero, M.; Wang, J.; Sorrentino, A.; Buonocore, G. G.; Sorrentino, L.; Lavorgna, M.; Xia, H. S.; Iannace, S. Enhancing the EMI Shielding of Natural Rubber-Based Supercritical CO2 Foams by Exploiting Their Porous Morphology and CNT Segregated Networks. Nanoscale 2019, 11, 1011–1020. DOI: https://doi.org/10.1039/c8nr07351a.
- Lang, X. H.; Wang, D.; Prakashan, K.; Zhang, X.; Zhang, Z. X. Microcellular Chlorinated Polyethylene (CM) Rubber Foam by Using N2 as Blowing Agent. J. Polym. Res. 2017, 24, 175–185.
- Metivier, T.; Cassagnau, P. Foaming Behavior of Silicone/Fluorosilicone Blends. Polymer 2018, 146, 21–30. DOI: https://doi.org/10.1016/j.polymer.2018.05.028.
- Qi, L. J.; Wang, D.; Zhao, X. P.; Zhang, Z. X. Preparation and Performance of Brominated Isobutylene-Methyl Styrene Copolymer Foamed Material. China Synth. Rubber Ind. 2017, 40, 387–390.
- Li, J. S.; Liao, X.; Han, W. Q.; Xiao, W.; Ye, J. G.; Yang, Q.; Li, G. X.; Ran, Q. P. Microcellular Nanocomposites Based on Millable Polyurethane and Nano Silica by Two-Step Curing and Solid-State Supercritical CO2 Foaming: Preparation, High-Pressure Viscoelasticity and Mechanical Properties. J. Supercrit. Fluids 2017, 130, 198–209. DOI: https://doi.org/10.1016/j.supflu.2017.08.003.
- Zhang, Z. X.; Lang, X. H.; Zhang, X.; Xin, Z. X.; K, P. Microcellular Foaming of Chlorosulfonated Polyethylene Rubber and Its Kaolin-Filled Compounds with Supercritical Nitrogen. J. Appl. Polym. Sci. 2018, 135, 45656–45667. DOI: https://doi.org/10.1002/app.45656.
- Metivier, T.; Cassagnau, P. New Trends in Cellular Silicone: Innovations and Applications. J. Cell. Plast 2019, 55, 151–200. DOI: https://doi.org/10.1177/0021955X18806845.
- Chrusciel, J. J.; Lesniak, E. Preparation of Flexible, Self-Extinguishing Silicone Foams. J. Appl. Polym. Sci. 2011, 119, 1696–1703.
- Grande, J. B.; Fawcett, A. S.; McLaughlin, A. J.; Gonzaga, F.; Bender, T. P.; Brook, M. A. Anhydrous Formation of Foamed Silicone Elastomers Using the Piers–Rubinsztajn Reaction. Polymer 2012, 53, 3135–3142. DOI: https://doi.org/10.1016/j.polymer.2012.05.033.
- Flichy, N. M. B.; Kazarian, S. G.; Lawrence, C. J.; Briscoe, B. J. An ATR-IR Study of Poly (Dimethylsiloxane) under High-Pressure Carbon Dioxide: Simultaneous Measurement of Sorption and Swelling. J. Phys. Chem. B. 2002, 106, 754–759. DOI: https://doi.org/10.1021/jp012597q.
- Garg, A.; Gulari, E.; Manke, C. W. Thermodynamics of Polymer Melts Swollen with Supercritical Gases. Macromolecules 1994, 27, 5643–5653. DOI: https://doi.org/10.1021/ma00098a019.
- Şerbescu, A.; Saalwächter, K. Particle-Induced Network Formation in Linear PDMS Filled with Silica. Polymer 2009, 50, 5434–5442. DOI: https://doi.org/10.1016/j.polymer.2009.09.063.
- Rose, K.; Steinbüchel, A. Biodegradation of Natural Rubber and Related Compounds: Recent Insights into a Hardly Understood Catabolic Capability of Microorganisms. Appl. Environ. Microbiol. 2005, 71, 2803–2812. DOI: https://doi.org/10.1128/AEM.71.6.2803-2812.2005.
- Roslim, R.; Hashim, M. Y. A.; Augurio, P. T. Natural Latex Foam. J. Eng. Sci. 2012, 8, 15–27.
- Tangboriboon, N.; Rortchanakarn, S.; Petcharoen, K.; Sirivat, A. Effects of Foaming Agents and Calcium Carbonate on Thermo-Mechanical Properties of Natural Rubber Foams. Polimeri 2014, 35, 10–17.
- Zauzi, N. S. A.; Ariff, Z. M.; Khimi, S. R. Foamability of Natural Rubber via Microwave Assisted Foaming with Azodicarbonamide (ADC) as Blowing Agent. Mater. Today: Proc 2019, 17, 1001–1007.
- Ariff, Z. M.; Zakaria, Z.; Tay, L. H.; Lee, S. Y. Effect of Foaming Temperature and Rubber Grades on Properties of Natural Rubber Foams. J. Appl. Polym. Sci. 2008, 107, 2531–2538. DOI: https://doi.org/10.1002/app.27375.
- Jones, R. H.; Wei, Y. K. Application of Trans-1,4 Polyisoprene in Orthopedic and Rehabilitation Medicine. J. Biomed. Mater. Res. 1971, 5, 19–30. DOI: https://doi.org/10.1002/jbm.820050205.
- Rodriguez-Perez, M. A. Crosslinked Polyolefin Foams: Production, Structure, Properties, and Applications. In Crosslinking in Materials Science; Ameduri, B., Ed.; Springer: Berlin, 2005; pp. 97–126.
- Maiti, M.; Jasra, R. V.; Kusum, S. K.; Chaki, T. K. Microcellular Foam from Ethylene Vinyl Acetate/Polybutadiene Rubber (EVA/BR) Based Thermoplastic Elastomers for Footwear Applications. Ind. Eng. Chem. Res. 2012, 51, 10607–10612. DOI: https://doi.org/10.1021/ie300396m.
- Ma, J. Z.; Shao, L.; Xue, C. H.; Deng, F. Q.; Duan, Z. Y. Compatibilization and Properties of Ethylene Vinyl Acetate Copolymer (EVA) and Thermoplastic Polyurethane (TPU) Blend Based Foam. Polym. Bull. 2014, 71, 2219–2234. DOI: https://doi.org/10.1007/s00289-014-1183-5.
- Zhang, B. S.; Zhang, Z. X.; Lv, X. F.; Lu, B. X.; Xin, Z. X. Properties of Chlorinated Polyethylene Rubber/Ethylene Vinyl Acetate Copolymer Blend-Based Foam. Polym. Eng. Sci. 2012, 52, 218–224. DOI: https://doi.org/10.1002/pen.22071.
- Zhang, B. S.; Lv, X. F.; Zhang, Z. X.; Liu, Y.; Kim, J. K.; Xin, Z. X. Effect of Carbon Black Content on Microcellular Structure and Physical Properties of Chlorinated Polyethylene Rubber Foams. Mater. Des. 2010, 31, 3106–3110. DOI: https://doi.org/10.1016/j.matdes.2009.12.041.
- Wang, B.; Wang, M. H.; Xing, Z.; Zeng, H. Y.; Wu, G. Z. Preparation of Radiation Crosslinked Foams from Low-Density Polyethylene/Ethylene-Vinyl Acetate (LDPE/EVA) Copolymer Blend with a Supercritical Carbon Dioxide Approach. J. Appl. Polym. Sci. 2013, 127, 912–918. DOI: https://doi.org/10.1002/app.37826.
- Lee, S.-T.; Park, C. B. Foam Extrusion: Principles and Practice; CRC Press: Boca Raton, 2014.
- Lee, S.-T.; Ramesh, N. S. Polymeric Foams: Mechanisms and Materials; CRC Press: Boca Raton, 2004.
- Lee, S.-T. Polymeric Foams: Innovations in Process, Technologies and Products; CRC Press: Boca Raton, 2016.
- Michaeli, W.; Heinz, R. Foam Extrusion of Thermoplastic Polyurethanes (TPU) Using CO2 as a Blowing Agent. Macromol. Mater. Eng 2000, 284, 35–39.
- Kropp, D.; Michaeli, W.; Herrmann, T.; Schröder, O. Foam Extrusion of Thermoplastic Elastomers Using CO2 as Blowing Agent. J. Cell. Plast 1998, 34, 304–311. DOI: https://doi.org/10.1177/0021955X9803400402.
- Stachak, P.; Hebda, E.; Pielichowski, K. Foaming Extrusion of Thermoplastic Polyurethane Modified by POSS Nanofillers. Compos. Theory Pract. 2019, 19, 23–29.
- Faruk, O.; Sain, M. Continuous Extrusion Foaming of Lignin Enhanced Thermoplastic Polyurethane (TPU). J. Biobased Mat. Bioenergy. 2013, 7, 309–314. DOI: https://doi.org/10.1166/jbmb.2013.1365.
- Dai, C. L.; Zhang, C. L.; Huang, W. Y.; Chang, K.-C.; Lee, L. J. Thermoplastic Polyurethane Microcellular Fibers via Supercritical Carbon Dioxide Based Extrusion Foaming. Polym. Eng. Sci. 2013, 53, 2360–2369. DOI: https://doi.org/10.1002/pen.23495.
- Kim, S. G.; Lee, J. W. S.; Park, C. B.; Sain, M. Enhancing Cell Nucleation of Thermoplastic Polyolefin Foam Blown with Nitrogen. J. Appl. Polym. Sci. 2010, 118, 1691–1703.
- Zhai, W. T.; Park, C. B. Effect of Nanoclay Addition on the Foaming Behavior of Linear Polypropylene-Based Soft Thermoplastic Polyolefin Foam Blown in Continuous Extrusion. Polym. Eng. Sci. 2011, 51, 2387–2397. DOI: https://doi.org/10.1002/pen.22011.
- Kim, S. G.; Park, C. B.; Sain, M. Foamability of Thermoplastic Vulcanizates Blown with Various Physical Blowing Agents. J. Cell. Plast 2008, 44, 53–67. DOI: https://doi.org/10.1177/0021955X07079224.
- Kim, S. G.; Park, C. B.; Kang, B. S.; Sain, A. Foamability of Thermoplastic Vulcanizates (TPVs) with Carbon Dioxide and Nitrogen. Cell. Polym 2006, 25, 19–33. DOI: https://doi.org/10.1177/026248930602500102.
- Xu, J. Y. Microcellular Injection Molding; John Wiley & Sons, Inc.: Hoboken, 2010.
- Xu, J.; Pierick, D. Microcellular Foam Processing in Reciprocating-Screw Injection Molding Machines. J. Injection Molding Technol. 2001, 5, 152.
- Gong, S.; Yuan, M.; Chandra, A.; Kharbas, H.; Osorio, A.; Turng, L. S. Microcellular Injection Molding. Int. Polym. Proc 2005, 20, 202–214. DOI: https://doi.org/10.3139/217.1883.
- Sun, X. F.; Kharbas, H.; Turng, L.-S. Fabrication of Highly Expanded Thermoplastic Polyurethane Foams Using Microcellular Injection Molding and Gas-Laden Pellets. Polym. Eng. Sci. 2015, 55, 2643–2652. DOI: https://doi.org/10.1002/pen.24157.
- Sporrer, A. N. J.; Altstädt, V. Controlling Morphology of Injection Molded Structural Foams by Mold Design and Processing Parameters. J. Cell. Plast. 2007, 43, 313–330. DOI: https://doi.org/10.1177/0021955X07079043.
- Spoerrer, A. N. J.; Bangarusampath, D. S.; Altstaedt, V. The Challenge of Foam Injection-Moulding - Possibilities to Improve Surface Appearance, Foam Morphology and Mechanical Properties. Cell. Polym. 2008, 27, 101–121. DOI: https://doi.org/10.1177/026248930802700203.
- Ishihara, S.; Hikima, Y.; Ohshima, M. Preparation of Open Microcellular Polylactic Acid Foams with a Microfibrillar Additive Using Coreback Foam Injection Molding Processes. J. Cell. Plast 2018, 54, 765–784. DOI: https://doi.org/10.1177/0021955X18770441.
- Mi, H. Y.; Jing, X.; Peng, J.; Turng, L.-S.; Peng, X. F. Influence and Prediction of Processing Parameters on the Properties of Microcellular Injection Molded Thermoplastic Polyurethane Based on an Orthogonal Array Test. J. Cell. Plast 2013, 49, 439–458. DOI: https://doi.org/10.1177/0021955X13488399.
- Wang, X. C.; Jing, X.; Peng, Y. Y.; Ma, Z. K.; Liu, C. T.; Turng, L.-S.; Shen, C. Y. The Effect of Nanoclay on the Crystallization Behavior, Microcellular Structure, and Mechanical Properties of Thermoplastic Polyurethane Nanocomposite Foams. Polym. Eng. Sci. 2016, 56, 319–327. DOI: https://doi.org/10.1002/pen.24257.
- Wu, H. B.; Haugen, H. J.; Wintermantel, E. Supercritical CO2 in Injection Molding Can Produce Open Porous Polyurethane Scaffolds – a Parameter Study. J. Cell. Plast. 2012, 48, 141–159. DOI: https://doi.org/10.1177/0021955X11432970.
- Mi, H. Y.; Jing, X.; Salick, M. R.; Turng, L. S.; Peng, X. F. Fabrication of Thermoplastic Polyurethane Tissue Engineering Scaffold by Combining Microcellular Injection Molding and Particle Leaching. J. Mater. Res. 2014, 29, 911–922. DOI: https://doi.org/10.1557/jmr.2014.67.
- Mi, H. Y.; Jing, X.; Salick, M. R.; Peng, X. F.; Turng, L.-S. A Novel Thermoplastic Polyurethane Scaffold Fabrication Method Based on Injection Foaming with Water and Supercritical Carbon Dioxide as Coblowing Agents. Polym. Eng. Sci. 2014, 54, 2947–2957. DOI: https://doi.org/10.1002/pen.23852.
- Ellingham, T.; Kharbas, H.; Manitiu, M.; Scholz, G.; Turng, L.-S. Microcellular Injection Molding Process for Producing Lightweight Thermoplastic Polyurethane with Customizable Properties. Front. Mech. Eng. 2018, 13, 96–106. DOI: https://doi.org/10.1007/s11465-018-0498-6.
- Huang, A.; Peng, X. F.; Turng, L. S. In-Situ Fibrillated Polytetrafluoroethylene (PTFE) in Thermoplastic Polyurethane (TPU) via Melt Blending: Effect on Rheological Behavior, Mechanical Properties, and Microcellular Foamability. Polymer 2018, 134, 263–274. DOI: https://doi.org/10.1016/j.polymer.2017.11.053.
- Gunkel, F.; Spörrer, A. N. J.; Lim, G. T.; Bangarusampath, D. S.; Altstädt, V. Understanding Melt Rheology and Foamability of Polypropylene-Based TPO Blends. J. Cell. Plast. 2008, 44, 307–325. DOI: https://doi.org/10.1177/0021955X08088858.
- Wong, S.; Lee, J. W. S.; Naguib, H. E.; Park, C. B. Effect of Processing Parameters on the Mechanical Properties of Injection Molded Thermoplastic Polyolefin (TPO) Cellular Foams. Macromol. Mater. Eng. 2008, 293, 605–613. DOI: https://doi.org/10.1002/mame.200700362.
- Zhao, T. B.; Yang, M. T.; Wu, H.; Guo, S. Y.; Sun, X. J.; Liang, W. B. Preparation of a New Foam/Film Structure Poly (Ethylene-co-Octene) Foam Materials and Its Sound Absorption Properties. Mater. Lett. 2015, 139, 275–278. DOI: https://doi.org/10.1016/j.matlet.2014.10.061.
- Mi, H. Y.; Jing, X.; Turng, L. S.; Peng, X. F. 2013 Asme Microcellular Injection Molding of Thermoplastic Polyurethane (TPU) Scaffolds Using Carbon Dioxide and Water as Co-Blowing Agents. Proceedings of the Asme 8th International Manufacturing Science and Engineering Conference - 2013, Vol. 1; Amer Soc Mechanical Engineers: New York. DOI: https://doi.org/10.1115/MSEC2013-1154.
- Sun, X. F.; Turng, L.-S. Novel Injection Molding Foaming Approaches Using Gas-Laden Pellets with N2, CO2, and N2 + CO2 as the Blowing Agents. Polym. Eng. Sci. 2014, 54, 899–913. DOI: https://doi.org/10.1002/pen.23630.
- Kharbas, H. A.; Ellingham, T.; Manitiu, M.; Scholz, G.; Turng, L.-S. Effect of a Cross-Linking Agent on the Foamability of Microcellular Injection Molded Thermoplastic Polyurethane. J. Cell. Plast. 2017, 53, 407–423. DOI: https://doi.org/10.1177/0021955X16652109.
- Okamoto, K. T. Microcellular Processing; Hanser Publications: Cincinnati, 2003.
- Zhao, J. C.; Zhao, Q. L.; Wang, L.; Wang, C. D.; Guo, B.; Park, C. B.; Wang, G. L. Development of High Thermal Insulation and Compressive Strength BPP Foams Using Mold-Opening Foam Injection Molding with in-Situ Fibrillated PTFE Fibers. Eur. Polym. J. 2018, 98, 1–10. DOI: https://doi.org/10.1016/j.eurpolymj.2017.11.001.
- Danielsson, C.; Ruault, S.; Simonet, M.; Neuenschwander, P.; Frey, P. Polyesterurethane Foam Scaffold for Smooth Muscle Cell Tissue Engineering. Biomaterials 2006, 27, 1410–1415. DOI: https://doi.org/10.1016/j.biomaterials.2005.08.026.
- Li, B.; Davidson, J. M.; Guelcher, S. A. The Effect of the Local Delivery of Platelet-Derived Growth Factor from Reactive Two-Component Polyurethane Scaffolds on the Healing in Rat Skin Excisional Wounds. Biomaterials 2009, 30, 3486–3494. DOI: https://doi.org/10.1016/j.biomaterials.2009.03.008.
- Li, B.; Yoshii, T.; Hafeman, A. E.; Nyman, J. S.; Wenke, J. C.; Guelcher, S. A. The Effects of rhBMP-2 Released from Biodegradable Polyurethane/Microsphere Composite Scaffolds on New Bone Formation in Rat Femora. Biomaterials 2009, 30, 6768–6779. DOI: https://doi.org/10.1016/j.biomaterials.2009.08.038.