Radiation grafting of styrene and maleic anhydride onto PTFE membranes and sequent sulfonation for applications of vanadium redox battery

被引：26

作者：

Qiu, Jingyi ^{[1
]}

Ni, Jiangfeng ^{[1
]}

Zhai, Maolin ^{[1
]}

Peng, Jing ^{[1
]}

Zhou, Henghui ^{[1
]}

Li, Jiuqiang ^{[1
]}

Wei, Genshuan ^{[1
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, Dept Appl Chem, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China

来源：

RADIATION PHYSICS AND CHEMISTRY | 2007年 / 76卷 / 11-12期

关键词：

radiation grafting; poly(tetrafluoroethylene) (PTFE); styrene; maleic anhydride;

D O I：

10.1016/j.radphyschem.2007.01.012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using gamma-radiation technique, poly(tetratluoroethylene) (PTFE) membrane was grafted with styrene (St) (PTFE-graft-PS) or binary monomers of St and maleic anhydride (MAn) (PTFE-graft-PS-co-PMAn), respectively. Then grafted membranes were further sulfonated with chlorosulfonic acid into ion-exchange membranes (denoted as PTFE-graft-PSSA and PTFE-graft-PSSA-co-PMAc, respectively) for application of vanadium redox battery (VRB). Micro-FTIR analysis indicated that PTFE was successfully grafted and sulfortated at the above two different conditions. However, a higher degree of grafting (DOG) was obtained in St/MAn binary system at the same dose due to a synergistic effect. Comparing with PTFE-graft-PSSA, PTFE-graft-PSSA-co-PMAc membrane showed higher water uptake and ionexchange capacity (IEC) and lower area resistance (AR) at the same DOG. In addition, PTFE-graft-PSSA-co-PMAc with 6% DOG also showed a higher IEC and higher conductivity compared to Nafion membrane. Radiation grafting of PTFE in St/MAn binary system and sequent sulfortation is an appropriate method for preparing ion-exchange membrane of VRB. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1703 / 1707

页数：5

共 11 条

[1] High energy radiation grafting of fluoropolymers [J].