文献类型：期刊文献

英文题名：Morphology and mechanical properties of natural rubber latex films modified by exfoliated Na-montmorillonite/polyethyleneimine-g-poly (methyl methacrylate) nanocomposites

作者：Wang, Shuyi[1];Tian, Xiaohui[1];Sun, Jinyu[1];Liu, Jin[1];Duan, Junchao[1]

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

年份：2016

卷号：133

期号：38

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20162802581675);WOS:【SCI-EXPANDED(收录号:WOS:000380005700023)】；

基金：This research was supported by the Fundamental Research Funds for the Central Universities (22A201514002).

语种：英文

外文关键词：clay; emulsion; films; mechanical properties; rubber

摘要：Na-montmorillonite/polyethyleneimine-g-poly(methyl methacrylate) (Na-MMT/PEI-g-PMMA) nanocomposite latexes were prepared by soap-free emulsion polymerization in the aqueous suspension of Na-MMT. The exfoliated morphology of the nanocomposites was confirmed by XRD and TEM. With the aim of improving morphology and mechanical properties of natural rubber latex (NRL) films, the synthesized Na-MMT/PEI-g-PMMA nanocomposites were mixed with NRL by latex compounding technology. The results of SEM and AFM analysis showed that the surface of NRL/Na-MMT/PEI-g-PMMA film was smoother and denser than that of pristine NRL film while Na-MMT was dispersed uniformly on the fracture surface of the modified films, which suggested the good compatibility between NRL and Na-MMT/PEI-g-PMMA. The tensile strength of NRL/Na-MMT/PEI-g-PMMA films was increased greatly by 85% with 10 phr Na-MMT/PEI-g-PMMA when Na-MMT content was 3 wt % and the elongation at break also increased from 930% to 1073% at the same time. (C) 2016 Wiley Periodicals, Inc.