期刊
JOURNAL OF APPLIED POLYMER SCIENCE
卷 120, 期 3, 页码 1385-1389出版社
WILEY
DOI: 10.1002/app.33218
关键词
multiwalled carbon nanotube; polyacrylonitrile; in situ polymerization; composite fiber
资金
- National Nature Science Foundation of China (NSFC) [50673082, 50532010]
Multi-walled carbon nanotubes (CNTs) were mixed with polyacrylonitrile (PAN) by in situ polymerization or by mechanically mixing. The mixtures were then wet-spun into fibers, respectively. The effects of mixing method on the interfacial bonding between the components in the fibers and the properties of the fiber were investigated by Raman spectroscopy, TEM, SEM, and tensile strength testing. By in situ polymerization mixing, a thin layer of PAN molecules is observed to cover the surface of the CNT, which increases the diameter of CNT evidently. Results of Raman spectroscopy indicate that the layer of PAN molecules are strongly attached onto the surface of CNT through grafting polymerization, leading to strong chemical bonding between CNTs and PAN matrix in the obtained fibers. In contrast, no obvious chemical interactions are observed between them in the fibers prepared by mechanically mixing. In both cases, the CNTs have significantly strengthened the PAN fibers. However, the fibers prepared from in situ polymerization mixing are much stronger because of the interfacial bonding effect between the PAN molecules and CNTs. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 1385-1389, 2011
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据