摘要
采用浓硫酸和聚醚醚酮(PEEK)制备了不同磺化度(DS)的磺化聚醚醚酮(SPEEK)。通过1 H-核磁(1 HNMR)对SPEEK化学结构进行表征。同时,根据1 H-NMR积分面积计算并确定了70℃条件下,磺化时间分别为2、4、6、8和10h制备的SPEEK磺化度分别为25.6%、48.7%、71.6%、85.4%和91.0%。采用扫描电镜(SEM)、差式扫描量热仪(DSC)以及热重分析(TGA)对比分析了磺化度对SPEEK微观结构、玻璃化转变温度(Tg)和热稳定性能的影响。研究结果表明,磺化度为71.6%的SPEEK具有均匀的微观结构和最优异的热稳定性能。
Sulfonated poly(ether ether ketone)(SPEEK) materials with various sulfonation degree(DS) were pre- pared through concentrated H2 SO4 and poly(ether ether ketone)(PEEK). The chemical structure of SPPEK was measured via 1 H-nuclear magnetic resonance (1 H-NMR). Meanwhile,DS of SPEEK undergoing sulfonated time of 2,4,6,8 and 10 h was 25.6% ,48.7% ,71.6% ,85.4% and 91.0% ,respectively,which was calculated according to the integral area from 1 H- NMR. The microstructure,glass transition temperature (Tg) and thermal stability of SPEEK were measured by scanning e- lectron microscope(SEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), respectively. The results demonstrated that SPEEK with DS of 71.6% owned uniform microstructure and the best thermal stability a- mong the prepared SPEEK.
作者
戴先芝
赵春霞
Dai Xianzhi Zhao Chunxia(Aba Teachers College,Wenchuan 623002 Department of Material Science and Engineering, Southwest Petroleum University, Chengdu 610500)
出处
《化工新型材料》
CAS
CSCD
北大核心
2016年第12期74-76,共3页
New Chemical Materials
基金
阿坝师范学院校级专项课题(ASZ14-02)
西南石油大学培育项目(2014PYZ013)
关键词
磺化度
磺化聚醚醚酮
微观结构
热性能
sulfonation degree,sulfonated poly(ether ether ketone) ,microstructure,thermal property