Sulfonated Polysulfone Ionomer Membranes for Fuel Cells
Sulfonated polysulfone (SPSU) ionomer membranes were prepared via a solution sulfonation method using mixtures of chlorosulfonic acid (HSO<,3>Cl, CSA) and chlorotrimethylsilane ((CH<,3>)<,3>SiCl, CTMS) as sulfonating agent. Viscosimetric comparisons showed that the polymer backbone didnt be affected by the sulfonating agent. Viscosimetric measurements indicated that, even after 72h reaction time, chain cleavage did not occur. Ion exchange capacities (IECs) of SPSU ionomer membranes were controlled by varying the amount of HSO<,3>Cl and (CH<,3>)<,3>SiCl. And the proton conductivities of SPSU membranes were comparable compared with Nafion<R> 117. Thermogravimetric analysis (TGA) showed the prepared SPSU membranes with fairly good thermal stability.
Sulfonation Polysulfone Membrane Ion-exchange capacity Proton conductivity
LI Weidong XU Hong ZHAO Jiongxin
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Key Laboratory of Science & Technology of Eco-Textile (Donghua University/ Jiangnan University), Min
国际会议
上海
英文
624-626
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）