摘要
利用缩聚反应合成了不同磺化度的侧链型磺化聚芳醚酮(SPAEK)质子交换膜材料,红外光谱与氢核磁谱图证实所合成产物为目标产物。通过热重分析仪(TGA)对SPAEK在氮气和空气中的热性能研究发现,SPAEK在氮气中的热稳定性要好于在空气中的。通过Friedman方法计算得到了不同磺化度SPAEK分别在氮气和空气氛围下的活化能E和相关系数r。利用Coats-Redfern方法探讨了SPAEK的降解机理,结果表明SPAEK的降解机理为F1机理。
A series of sulfonated poly （arylene ether ketone） （SPAEK） copolymers with side chain were synthesized by nucleophilic polycondensation. The structures of SPAEK were confirmed by FT-IR and 1H-NMR spectroscopy. Degradation behaviors of sulfonated poly （aryl ether ketone） （SPAEK） with different degree of sulfonation（DS） were studied by thermogravimetry analysis（TGA） at different heating rate in different atmosphere （N2 and air）. Influence of atmosphere on thermal stability and degradation rate of SPAEK was investigated. The activation energy E and correlation coefficient r were calculated by Friedman method in N2 and air, respectively. The degradation mechanism of SPAEK was discussed by Coats-Redfern method, which provided a theoretical basis for proton exchange membrane materials used in fuel cells at high temperature.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2013年第4期55-59,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(51273024)
吉林省教育厅项目(2009-118)
关键词
磺化聚芳醚酮
热重分析
降解
sulfonated poly（aryl ether ketone）
thermogravimetry analysis
degradation
