为考察氧化还原聚合中的电化学催化效应,在双室电解池中采用铂丝为工作电极进行丙烯酰胺的电解聚合,引发剂为硫酸铈-草酸体系.Ce4+氧化草酸产生自由基,而电解可以使Ce4+再生.对电解和非电解聚合的聚丙烯酰胺产率及分子量进行了对比,结果表明,电解既能大幅提高产率,也能明显提高聚合产物的分子量,即对聚合物链的引发和增长两方面都有促进作用.保证电催化效应的关键因素除适宜的电极电势外,还要有足够大的电极面积与溶液体积之比.
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