PROPERTIES OF ION-EXCHANGE MEMBRANE FROM IRRADIATED POLY (STYRENEBUTADIENE-4-VINYLPYRIDINE) TRIBLOCK COPOLYMER I. EFFECT OF AMINATING SULFONATING AGENTS AND REACTION TEMPERATURE ON PROPERTIES OF ION EXCHANGE MEMBRANE 辐照三嵌段聚苯乙烯-丁二烯-4-乙烯基吡啶共聚物离子交换膜性能的研究——Ⅰ.季铵化、磺化试剂、反应温度对膜性能的影响
In this paper, the properties of ion-exchange membrane prepared by irradiating poly(sty-rene-butadiene-4-vinylpyridine) triblock copolymer, with different sulfonating agents and qoa-ternizing agents were investigated. The results showed that the ion-exchange capacity of membrane sulfonated by chlorsulfonic acid is higher than that of membrane sulfonated by sulfonic acid. Although the ion-exchange capacity of membrane quaternized by methyl iodide is higher than that of membrane quaternized by methylene diiodide,mechanical properties of the former are too poor to form membranes. The ion-exchange membrane with higher ion-exchange capa-city will result in lower concentration membrane potential,higher membrane conductivity and water content.