Preparation and characterization of polylactic acid (PLA) carbon nanotube nanocomposites

By Yinghui Zhou, Liang Lei, Bo Yang, Jianbo Li, Jie Ren. Polymer testing, 2018

172 citations recorded by the source corpus.

Abstract Polylactic acid (PLA) was modified with poly (butylene adipate-co-terephthalate) (PBAT) and carbon nanotubes (CNTs-COOH) with carboxyl groups by using the melt blending technique. Ethylene-butyl acrylate-glycidyl methacrylate (E-BA-GMA) was used as a compatibilizer which can bond the CNTs-COOH nanoparticles with PLA/PBAT matrix through interaction between the epoxy and carboxyl groups. The effects of the CNTs-COOH content on the mechanical properties, thermal properties, crystallinity and morphology of PLA/CNTs-COOH nanocomposites were investigated. The results showed that the tensile strength, elongation at break and impact strength of PLA could be simultaneously increased by incorporating CNTs-COOH nanoparticles. PLA/CNTs-COOH nanocomposites possessed higher thermal stability than pure PLA. The glass transition temperature and initial degradation temperature of PLA/CNTs-COOH increased as the CNTs-COOH content increased. When the CNTs-COOH content was low (≤0.5 wt%), CNTs-COOH nanoparticles could uniformly disperse in the PLA matrix. In general, CNTs-COOH was an effective filler to reinforce and toughen PLA simultaneously, and the PLA/CNTs-COOH nanocomposite with 0.5 wt% CNTs-COOH exhibited a good combination of strength and toughness.

Subfields: Biomaterials, Biomedical Engineering, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/9edcf8d9791694bf57d562afe9bb25b8dd9cfd96

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In Biomedical Engineering

  1. Amit Rai Dixit
  2. Ashok Kumar
  3. K. Sharma

In Polymers and Plastics

  1. Amit Rai Dixit
  2. K. Sharma

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