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ABSTRACT
A medical microneedle candidate material is prepared bases on polylactic acid (PLA), poly(ethylene glycol) (PEG), and low content of multi-walled carbon nanotubes (MWCNT) composites. A successive self-nucleation and annealing analysis was applied and the presence of PEG and the MWCNT ratio had a significant influence on the processability of PLA. The composites show much better tensile strength and elongation at break than pure PLA. Based on the good processability and the balance of high strength and superior toughness, the polymer composites can be potential material for medical microneedle.
Acknowledgments
This work was supported by the National Science Fund under Grant No. 51603192, the natural science foundation of Henan Province under Grant No. 182300410211. The authors also thank Dr Youcai Lu (Zhengzhou University) for her help in morphology characterization.
Disclosure statement
The authors declare that they have no conflict of interest.
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Notes on contributors
Shiwei Wang
Shiwei Wang is associate professor of Zhengzhou University, dadicates on the advanced processing of polymer based materials and composites.
Yuting Leng
Yuting Leng is assistant professor of Zhengzhou University, dadicates on the synthesis and characterization of organic functional materials.
Qian Li
Qian Li is professor of Zhengzhou University, dadicates on the structure and properties of polymer based materials.