Friedel-Crafts酰基化法制备聚苯乙烯型阴离子交换树脂
Preparation of Anion Exchange Resins Based on Crosslinked Polystyrene by Friedel-Crafts Acetylation
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摘要: 提出了一种合成聚苯乙烯型阴离子交换树脂的新方法:通过Friedel-Crafts酰基化反应在交联聚苯乙烯上引入乙酰基,然后经溴化、胺化反应制备阴离子交换树脂。该方法避免了使用氯甲醚等致癌物质,并消除了二次交联等副反应。讨论了溶剂,催化剂,试剂和反应温度及时间等因素对各步反应的影响。测定了产物的基本性能并对所得结果进行了讨论。Abstract: This paper presents a new method for preparing anion exchange resins, which comprises first acetylation of styrene-divinylbenzene copolymers by Friedel-Crafts reaction followed by bromination and amination. The new method avoids the toxic problem related