文献类型：期刊文献

英文题名：Polylactide-based nanocomposites with stereocomplex networks enhanced by GO-g-PDLA

作者：Zhang, Dongge[1];Lin, Yu[1];Wu, Guozhang[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：138

起止页码：57

外文期刊名：COMPOSITES SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20164903098561);WOS:【SCI-EXPANDED(收录号:WOS:000392778500008)】；

基金：This research was supported by the National Key Basic Research Program of China (2013CB035505), the National Natural Science Foundation of China (51373053, 20974033, 51503066), and the Fundamental Research Funds for the Central Universities. (22A201514004)

语种：英文

外文关键词：Polymer-matrix composites (PMCs); Interface; Electrical properties; Mechanical properties; Infrared (IR) spectroscopy

摘要：Nanoparticle surfaces grafted with polymers similar to the matrix have been widely used to eliminate interface incompatibility and control the spatial organization of nanoparticles. However, the absence of specific interactions between the matrix and the graft limits the intrinsic versatility of nanoparticles, such as high mechanical strength, heat resistance, and excellent thermal/electrical conductivity. In this study, the specific interaction between poly(D-lactide)-grafted graphene oxide (GO-g-PDLA) and the poly(L-lactide) (PLLA) matrix was investigated via differential scanning calorimetry, dynamic mechanical analysis, electrical measurement, microscopy observation and in situ Fourier transform infrared spectroscopy (FTIR). In situ FTIR results reveal the formation process of stereocomplex crystallites (Sc) on the surface of grafted GO. Remarkable improvement of the crystallinity of stereocomplex nanocomposites was detected because of the heterogeneous nucleating effect of grafted GO. The GO-guided stereo complex networks endow polylactide-based nanocomposites with significantly improved mechanical strength and electrical conductivity at low GO concentrations. (C) 2016 Elsevier Ltd. All rights reserved.