Effect of Nanoclay Content and pH of the Medium on the Swelling Characteristics of Grafted and Cross-Linked Mixed Chitosan Derivatives

REFERENCES

• Flory , P.J. Principles of Polymer Chemistry , Cornell University Press : Ithica , New York , 1953 .
   Google Scholar
• Nge , T.T. ; Hori , N. ; Takemura , A. ; Ono , H. Swelling behavior of Chitosan/poly(acrylic acid) complex . J. Appl. Polym. Sci. 2004 , 92 ( 5 ), 2930 – 2940 .
   Google Scholar
• Wada , T. ; Yasuda , M. ; Yako , H. ; Matoba , Y. ; Uragami , T. Preparation and characterization of hybrid quaternized chitosan/acrylic resin emulsions and their films . Macromol. Mater. Eng. 2007 , 292 ( 2 ), 147 – 154 .
   Google Scholar
• Chavasit , V. ; Torres , J.A. Chitosan-poly(acrylic acid): Mechanism of complex formation and potential industrial applications . Biotechnol. Prog. 2008 , 6 ( 1 ), 2 – 6 .
   Google Scholar
• Wang , J. ; Chen , C. ; Kuo , Y. Chitosan-poly(acrylic acid) nanofiber networks prepared by the doping induction of succinic acid and its ammonia-response studies . Polym. Adv. Technol. 2008 , 19 ( 9 ), 1343 – 1352 .
   Google Scholar
• Berger , J. ; Reist , M. ; Mayer , J.M. ; Felt , O. ; Gurny , R. Structure and interactions in Chitosan hydrogels formed by complexation or aggregation for biomedical applications . Eur. J. Pharm. Biopharm. 2004 , 57 ( 1 ), 35 – 52 .
   PubMed Web of Science ®Google Scholar
• Li , A. ; Wang , A. ; Chen , J. Studies on poly (acrylic acid)/attapulgite superabsorbent composites . II. Swelling behaviors of superabsorbent composites in saline solutions and hydrophilic solvent-water mixtures. J. Appl. Polym. Sci. 2004 , 94 ( 5 ), 1869 – 1876 .
   Google Scholar
• Zhang , J. ; Liu , R. ; Li , A. ; Wang , A. Preparation, swelling behaviors and application of polyacrylamide/attapulgite superabsorbent composites . Polym. Adv. Technol. 2006 , 17 ( 1 ), 12 – 19 .
   Google Scholar
• Wang , W. ; Zheng , Y. ; Wang , A. Syntheses and properties of superabsorbent composites based on natural guar gum and attapulgite . Polym. Adv. Technol. 2008 , 19 ( 12 ), 1852 – 1859 .
   Web of Science ®Google Scholar
• Qi , X. ; Liu , M. ; Chen , Z. ; Liang , R. Preparation and properties of diatomite composite superabsorbent . Polym. Adv. Technol. 2007 , 18 ( 3 ), 184 – 193 .
   Google Scholar
• Zhang , J.P. ; Chen , H. ; Wang , A.Q. Study on superabsorbent composite—VII . Effects of organification of attapulgite on swelling behaviors of poly (acrylic acid-co-acrylamide)/sodium humate/organo-attapulgite composite. Polym. Adv. Technol. 2006 , 17 ( 5 ), 379 – 385 .
   Google Scholar
• Xie , Y. ; Wang , A. ; Liu , G. Superabsorbent composite XXII: Effects of modified sepiolite on water absorbency and swelling behavior of chitosan-g-poly (acrylic acid)/sepiolite superabsorbent composite . Polym. Compos. 2010 , 31 , 89 – 96 .
   Web of Science ®Google Scholar
• Liu , J. ; Wang , A. Study on superabsorbent composites . XXI. Synthesis, characterization and swelling behaviors of Chitosan-g-poly (acrylic acid)/organo-rectorite nanocomposite superabsorbents. J. Appl. Polym. Sci. 2008 , 110 ( 2 ), 678 – 686 .
   Google Scholar
• Yu , Y. ; Chunjing Zhu , C. ; Liu , Y. ; Zhang , E. ; Kong , Y. Synthesis and characterization of n-maleyl chitosan-cross-linked poly(acrylamide)/montmorillonite nanocomposite hydrogels . Polym.-Plast. Technol. Eng. 2011 , 50 ( 5 ), 525 – 529 .
   Web of Science ®Google Scholar
• Yu , Y. ; Liu , Y. ; Jia , F. ; Li , S. ; Kong , Y. ; Zhang , E. Synthesis and characterization of temperature-sensitive poly(n-isopropylacryamide-co-acrylamide)/montmorillonite nanocomposite hydrogels . Int. J. Polym. Mater. 2012 , in press.
   PubMedGoogle Scholar
• Pourjavadi , A. ; Sadeghi , M. ; Hosseinzadeh , H. Modified carrageenan . 5. Preparation, swelling behavior, salt- and pH-sensitivity of partially hydrolyzed cross-linked carrageenan-graft-polymethacrylamide superabsorbent hydrogel. Polym. Adv. Technol. 2004 , 15 ( 11 ), 645 – 653 .
   Google Scholar
• Wang , L. ; Wang , A. Adsorption behaviors of Congo red on the N,O-carboxymethyl-Chitosan/montmorillonite nanocomposite . Chem. Eng. J. 2008 , 143 ( 1–3 ), 43 – 50 .
   Google Scholar
• Dyer , J.R. Application of Absorption Spectroscopy of Organic Compounds , Prentice-Hall of India Private Limited : New Delhi , 2003 .
   Google Scholar
• Chen , J. ; Zhao , Y. An efficient preparation method for superabsorbent polymers . J. Appl. Polym. Sci. 1999 , 74 ( 1 ), 119 – 124 .
   Google Scholar
• Nagasawa , M. ; Murase , T. ; Kondo , K. Potentiometric titration of stereoregular polyelectrolytes . J. Phys. Chem. 1965 , 69 ( 11 ), 4005 – 4012 .
   Web of Science ®Google Scholar
• Ricka , J. ; Tanka , T. Swelling of ionic gels: Quantitative performance of the Donnan theory. Macromolecules 1984, 17 (12), 2916–2921.
   Web of Science ®Google Scholar
• Pourjavadi , A. ; Samadi , M. ; Ghasemzadeh , H. Fast-swelling superabsorbent hydrogels from poly (2-hydroxyethyl acrylate-co-acrylic acid) grafted on starch . Starch/Starke 2008 , 60 ( 2 ), 79 – 86 .
   Google Scholar
• Yu , C. ; Hui-Min , T. Cross-linked carboxymethyl chitosan-g-poly (acrylic acid) copolymer as a novel superabsorbent polymer . Carbohyd. Res. 2006 , 341 ( 7 ), 887 – 896 .
   PubMedGoogle Scholar
• Guo , B. ; Yuan , J. ; Gao , Q. pH and ionic sensitive chitosan/carboxymethyl chitosan IPN complex films for the controlled release of coenzyme A. Collide . Polym. Sci. 2008 , 286 ( 2 ), 175 – 181 .
   Google Scholar
• Nishi , S. ; Kotaka , T. Complex-forming polyoxyethylene: poly(acrylic acid) interpenetrating polymer networks III . Swelling and mechanochemical behavior. Polym. J. 1989 , 21 ( 5 ), 393 – 402 .
   Google Scholar
• Lee , W.F. ; Yang , L.G. Superabsorbent polymeric materials . XII. Effect of montmorillonite on water absorbency for poly(sodium acrylate) and montmorillonite nanocomposites superabsorbents. J. Appl. Polym. Sci. 2004 , 92 ( 5 ), 3422 – 3429 .
   Google Scholar