Enhanced Crystallization Kinetics of PLLA by Ethoxycarbonyl Ionic Liquid Modified Graphene

作     者：Pei Xu Zhao-Pei Cui Gang Ruan Yun-Sheng Ding Pei Xu;Zhao-Pei Cui;Gang Ruan;Yun-Sheng Ding

作者机构：Department of Polymer Science and Engineering School of Chemistry and Chemical Engineering and Anhui Key Laboratory of Advanced Functional Materials and Devices Hefei University of Technology 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2019年第37卷第3期

页      面：243-252页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：financially supported by the National Natural Science Foundation of China(No.51603060) the Fundamental Research Funds for the Central Universities(No.JZ2017YYPY0250) 

主　　题：Ionic liquid Graphene PLLA Crystallization Dielectric behavior 

摘      要：To investigate the performance of graphene(Gra) modified with ethoxycarbonyl ionic liquid(IL), chain mobility and crystallization kinetics of poly(L-lactic acid)(PLLA), a series of PLLA nanocomposites have been prepared using solution-cast *** can improve the dispersion of Gra in PLLA matrix and the samples containing IL have higher growth rate of PLLA spherulite than neat PLLA does. PLLA/IL/Gra and PLLA/2 Gra exhibit the same relaxation strength and time of αN relaxation that corresponds to the longest normal mode motion at 110-140 °C. PLLA/IL/Gra shows a faster crystallization rate than PLLA/2 Gra does, which might be attributed to the Gra-imidazolium cation interaction in IL modified Gra, the significant dispersion effect of IL at Gra surface, and the increase of nuclei density of PLLA/IL/Gra.