文献类型：期刊文献

英文题名：Novel polyacrylonitrile/Na-MMT/silica nanocomposite: Co -incorporation of two different form nano materials into polymer matrix

作者：Yu, Tianshi[1]; Lin, Jiaping[1]; Xu, Jiafu[1]; Chen, Tao[1]; Lin, Shaoliang[1]; Tian, Xiaohui[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat Minst Educ, Shanghai 200237, Peoples R China

年份：2007

卷号：67

期号：15-16

起止页码：3219

外文期刊名：COMPOSITES SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20074210872392);WOS:【SCI-EXPANDED(收录号:WOS:000250910600020)】；

语种：英文

外文关键词：polymer-matrix composites (PMCs); particle-reinforced composites; thermal properties; mechanical properties; polyacrylonitrile

摘要：Polyacrylonitrile (PAN)/Na-montmorillonite (Na-MMT)/SiO2 nanocomposites were synthesized via in-situ emulsion polymerization. The X-ray diffraction (XRD) measurements and transmission electron microscopy (TEM) observations show that the Na-MMT layers were exfoliated in polymerization and the nano materials are well dispersed in the polymer matrix. The thermogravimetric analysis (TGA) suggests that co-incorporating Na-MMT and SiO2 into the polymer matrix significantly enhances the thermal stability of the polymer. At same nano material loading, the PAN/Na-MMT/SiO2 nanocomposites show superior thermal stability with respect to the PAN/Na-MMT and PAN/SiO2 nanocomposites. The mechanical properties of the nanocomposites were also examined. It was found that the PAN/Na-MMT/SiO2 nanocomposites exhibit considerably enhanced moduli compared with the PAN/Na-MMT and PAN/SiO2 nanocomposites due to the synergistic reinforcing effect. (C) 2007 Elsevier Ltd. All rights reserved.