文献类型：期刊文献

英文题名：Synthesis and characterization of silane-grafted polyphenylene sulfide

作者：Di, Xinjun[1];Fang, Li[1];Lin, Qunfang[2];Zhang, Ting[3];Zhou, Xiaodong[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]Shanghai Aircraft Mfg Co Ltd, Aeronaut Mfg Technol Res Ctr, Shanghai, Peoples R China

年份：2014

卷号：26

期号：1

起止页码：97

外文期刊名：HIGH PERFORMANCE POLYMERS

收录：;EI(收录号：20140617268627);WOS:【SCI-EXPANDED(收录号:WOS:000331144100013)】；

语种：英文

外文关键词：Polyphenylene sulfide; silane grafting; cross-linking; toughening

摘要：A novel polyphenylene sulfide (PPS) modified by silane grafting and water cross-linking technology has been prepared using suspension grafting. Fourier transform infrared and x-ray photoelectron spectroscopic spectra demonstrated the achievement of silane grafting and subsequent water cross-linking. The grafting degree could be adjusted by altering the silane/PPS molar ratio, reaction temperature, reaction time, and so on. Wide angle x-ray diffraction analysis showed that the crystallinity and crystal size of the modified PPS decreased with increase in the grafting degree. Differential scanning calorimeter results also confirmed that the crystallinity and crystallization temperature decreased with the increase in the grafting degree. The silane-grafted PPS exhibited two weight loss stages in thermogravimetric curves, and the initial thermal decomposition temperature was much higher than the processing temperature. Therefore, the silane-grafted PPS is thermally stable enough to be used as a high-performance polymer and polymer matrix for structural applications. The extent of silane grafting plays a key role in the improvement of the impact toughness of the silane-grafted PPS. With the increasing silane grafting degree, the impact strength of the silane-grafted PPS/neat PPS blends obviously increased.