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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.

参考文献

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[3] 任祥忠,赵祺,刘剑洪,顾宜.聚吡咯/多壁碳纳米管的合成及电化学行为[J].高分子材料科学与工程,2008(10):29-32.
[4] Sarac AS.;Ustamehmetoglu B.;Yildirim H. .Electroinduced dispersion polymerization of acrylonitrile in the presence of poly(acrylic acid) and catalytic amount of Ce(IV)[J].Journal of Applied Polymer Science,2002(4):723-728.
[5] A.Sezai Sarac;Fevzi C.Cebeci .Electroinduced dispersive polymerization of methyl methacrylate in aqueous media[J].International Journal of Polymeric Materials,2004(9):763-776.
[6] Belkis Ustamehmetoglu;A. Sezai Sarac;Nilgiin Kizilcan;Ahmet Akar .Electroinduced oxidative copolymerization of N-vinyl carbazole with methyl ethyl ketone formaldehyde resin[J].Polymers for advanced technologies,2004(7):365-369.
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