文献类型：期刊文献

英文题名：In situ synthesis and characterization of poly(2,5-benzoxazole)/multiwalled carbon nanotubes composites

作者：Xie, Zhong[1];Zhuang, Qixin[1];Wang, Qing[2];Liu, Xiaoyun[1];Chen, Yi[1];Han, Zhewen[1]

机构：[1]E China Univ Sci & Technol, Key Lab Specially Funct Polymer Mat & Related Tec, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

年份：2011

卷号：52

期号：23

起止页码：5271

外文期刊名：POLYMER

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000296307100006)】；

基金：The authors express their gratitude to the National Natural Science Foundation of China (NSFC) for their financial support. Contract grant number is 50973028 and 50703010.

语种：英文

外文关键词：Poly(2,5-benzoxazole); Carbon nanotubes; Composites

摘要：This article reports the synthesis of poly(2,5-benzoxazole)/multiwalled carbon nanotubes (ABPBO/MWNT) composites by in situ polycondensation and their chemical and physical properties. The functional groups yielded from the surface modification of MWNTs by hydrochloric acids have been demonstrated to participate in the polymerization and thus led to the composites with homogenous dispersion of carbon nanotubes. The chemical structures and morphology of the afforded polymer composites have been fully characterized by FTIR, WAXD, UV-vis, TGA and SEM. The ABPBO/MWNT composites exhibit excellent thermal stability and greatly improved mechanical properties. The tensile modulus and tensile strength of the composites are 47% and 83%, respectively, higher than those of the polymer matrix. The dielectric constant of the composites is also significantly enhanced from 4 of the polymer matrix to 65 with the incorporation of 5 wt% MWNTs. (C) 2011 Elsevier Ltd. All rights reserved.