γ射线辐照聚偏氟乙烯接枝苯乙烯磺酸乙酯  

Radiation-induced grafting of ethyl styrenesulfonate onto polyvinylidene fluoride resin

作　　者：王以诚[1] 彭静[1] 曾心苗[2] 李久强[1] 翟茂林[1] 

机构地区：[1]北京大学化学与分子工程学院,放射化学与辐射化学重点学科实验室,教育部高分子化学与物理重点实验室,北京分子科学国家实验室,北京100871 [2]北京市射线应用研究中心,辐射新材料北京市重点实验室,北京100015

出　　处：《辐射研究与辐射工艺学报》2016年第5期33-39,共7页Journal of Radiation Research and Radiation Processing

基　　金：北京市自然科学基金项目(2132031);NSAF联合基金重点项目(U1430234)资助~~

摘　　要：以聚偏氟乙烯(Polyvinylidene fluoride,PVDF)树脂为基材,采用γ射线预辐射接枝法在PVDF树脂上接枝苯乙烯磺酸乙酯(Ethyl styrenesulfonate,ETSS),探讨吸收剂量、接枝温度、接枝反应时间及单体浓度对接枝率的影响。之后在95℃水解PVDF-g-PETSS聚合物得到PVDF接枝苯乙烯磺酸(PVDF-g-PSSA)离子交换树脂。红外光谱、X射线光电子能谱、热重分析证明PVDF-g-PETSS及PVDF-g-PSSA被成功制备。当接枝率为120%时,PVDF-g-PSSA的离子交换容量达到2.05 mmol/g。这种将带有磺酸基团的单体通过辐照接枝引入PVDF基材然后水解的方法简单、高效、污染小,有望在离子交换树脂及离子交换膜的制备中得到应用。Polyvinylidene fluoride（PVDF） resin was used as the substrate, and grafted with ethyl styrenesulfonate（ETSS） monomer through pre-irradiation graft polymerization method. The influence of absorbed dose, grafting temperature, reaction time, and concentration of ETSS monomer on grafting yield（Rg） were investigated. After that, the PVDF-g-PSSA ion exchange resin was obtained via hydrolysis of PVDF-g-PETSS at 95 oC. The grafting of ETSS and preparation of PVDF-g-PSSA were proved by FTIR, XPS and TGA. At the Rg of 120%, the ion exchange capacity of PVDF-g-PSSA reached 2.05 mmol/g. This work provides a facile route for the preparation of ion exchange resin.

关 键 词：离子交换树脂 聚偏氟乙烯 苯乙烯磺酸乙酯 辐射接枝 

分 类 号：TL13[核科学技术—核能科学]