Article
  • Evaluation of Non-isothermal Melt Crystallization Kinetics of thePoly(lactic acid)/Graphene Composites under Variant Cooling Circumstances via Solidification Analysis Approach

  • Bin Yang† , Peng Zhang, Shu-Chun Zhao, Ru Xia, Li-Fen Su, Ji-Bin Miao, Peng Chen, Jia-Sheng Qian, and You Shi*

  • College of Chemistry and Chemical Engineering, Key Laboratory of High-Performance Rubber and Products of Anhui Province, and Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University
    *College of Polymer Science and Engineering, the State Key Laboratory of Polymer Materials Engineering, Sichuan University

  • 응고분석을 이용한 냉각환경에 따른 Poly(lactic acid)/Graphene 복합체의 비등온 결정 동역학에 대한 연구
Abstract

The poly(lactic acid) (PLA)/graphene (GN) composites were prepared by solution blending. An in situ measurement technique was adopted to examine the non-isothermal crystallization of PLA/GN composites, which was different from the typical circumstances at constant cooling rate in DSC. The rheological properties of the samples were investigated, and the Carreau-A model was applied to non-linearly fit the rheological data. The non-isothermal crystallization kinetics and solidification behaviors at variant cooling rates were investigated using a modified version of Avrami equation by Jeziorny coupled with three-parameter model (TPM) and four-parameter model (FPM). Our findings showed that the viscosity of the PLA/GN composites dropped with increasing shear rate or GN content. Crystallization kinetic analysis suggested that GN served as an effective nucleating agent for PLA under non-isothermal melt crystallization conditions with variant cooling rate.


Keywords: poly(lactic acid), crystallization kinetics, nucleating agent, rheological properties, solidification

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2019; 43(5): 665-673

    Published online Sep 25, 2019

  • 10.7317/pk.2019.43.5.665
  • Received on Mar 4, 2019
  • Revised on Apr 21, 2019
  • Accepted on Jul 2, 2019

Correspondence to

  • Bin Yang

  • College of Chemistry and Chemical Engineering, Key Laboratory of High-Performance Rubber and Products of Anhui Province, and Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Anhui University, Hefei 230601, China

  • E-mail: yangbin@ahu.edu.cn