文献类型：会议论文

英文题名：Dynamic mechanical analysis of polyvinylalcohol/silica nanocomposite

作者：Peng, Zheng[1]; Kong, Ling Xue[1]; Li, Si Dong[2]

机构：[1]Univ S Australia, Ctr Adv Mfg Res, Mawson Lakes, SA 5095, Australia;[2]Zhanjiang Ocean Univ, Coll Sci, Zhanjiang 524088, Peoples R China

会议论文集：International Conference on Science and Technology of Synthetic Metals

会议日期：JUN 28-JUL 02, 2004

会议地点：Wollongong, AUSTRALIA

语种：英文

外文关键词：polyvinylalcohol; silica; nanocomposites; dynamic mechanical analysis (DMA)

外文摘要：Polyvinylalcohol/Silica (PVA/SiO2) nanocomposites with different SiO2 contents are synthesized by employing a novel self-assembly monolayer (SAM) technique. The influence of the silica on dynamic mechanical properties of the nanocomposites is investigated by conducting dynamic mechanical analysis (DMA) and quasi-thermal mechanical analysis (Q-TMA). It is found that the storage modulus (E'), loss factor (tga), glass transition temperature (T-g), and activation energy (E-a) of prepared nanocomposites all show a strong dependence on the SiO2 content. The Q-TMA results indicate that under a constant force, the elasticity of nanocomposites decreases with SiO2 content, and the softening temperature moves to a higher temperature when more SiO2 is added.