磺化聚苯硫醚砜的制备和性能表征  

Synthesis and Characterization of Sulfonated Poly(phenylene sulfide sulfone)

作　　者：肖慧[1] 李涛[1] 胡祥[1] 李瑞海[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610064

出　　处：《塑料工业》2011年第10期26-29,共4页China Plastics Industry

摘　　要：以浓硫酸为溶剂,发烟硫酸为磺化剂对聚苯硫醚砜的磺化过程,通过改变温度、反应时间、浓硫酸的用量和发烟硫酸的用量这四个因素来探究磺化反应的条件。利用FTIR、热重分析(TGA)、磺化度、比浓黏度和溶解性测试对其结构和性能进行了表征。结果表明,采用磺化时间为2 h,反应温度15℃,浓硫酸8 mL,发烟硫酸与聚苯硫醚砜的质量比为9.5时,可得到磺化度为62.2%,比浓黏度为0.964 mL/g的磺化聚苯硫醚砜。磺酸基的主要分解温度为346℃,主链的分解温度为534℃。其溶解性得到提高,可溶解在介电常数大于20.7的有机溶剂中。This paper studied on sulfonated process of sulfonated poly （ phenylene sulfide sulfone） based on sulfuric aid as solvent and oleum as sulfonating agent. By changing the four factors, such as temperature, reaction time, the dosage of sulfuric acid and oleum, the sulfonated conditions were explored. The structures and properties of the obtained polymer were characterized by FT-IR, TGA, testing of solubility, sulfonation degree and reduced inherent viscosity. The results indicated the sulfonation degree was 62. 2% and reduced inherent viscosity was 0. 964 mL/g when the raction temperature was at 15 ℃, the sulfonated time was for 2 h, sulfuric aid was 8 mL and the ratio of oleum/PPSS was 9.5. Decomposition temperature of sulfonie aid group and its main chain were 346 ℃, 534 ℃, respectively. It can be dissolved improvably in the polar solvent which dialectic constant exceeded 20.7.

关 键 词：聚苯硫醚砜 磺化 磺化度 比浓黏度 

分 类 号：TQ326.56[化学工程—合成树脂塑料工业]