Effects of ultrasonic vibration on the electroinitiated copolymerisation of styrene and isoprene

British Polymer Journal Pub Date : 1986-07-01 DOI:10.1002/PI.4980180415

U. Akbulut, L. Toppare, B. Yurttaş

引用次数: 0

Abstract

Copolymerisation of styrene and isoprene by constant potential electrolysis in dichloromethane was achieved at different polymerisation potentials. Effect of ultrasonic vibration on the rate and the yield of polymerisation has been discussed. The composition of the copolymers was found to be affected by the vibration as well as the polymerisation potential (Epol). At Epol=+3.30 V we found that r1=r2 and mole percents of isoprene and styrene in copolymer were equal to each other. Equality was also observed on reacted monomer concentrations, at that potential, which can be called critical polymerisation potential. At Epol values above or below the critical polymerisation potential none of the above-mentioned properties were equal. Monomer reactivity ratios were determined by the integrated Lewis-Mayo equation. Ultrasonic vibration as well as polymerisation potential was found to affect reactivity ratios.

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超声振动对苯乙烯和异戊二烯电引发共聚反应的影响

在不同的聚合电位下，用恒电位电解法在二氯甲烷中实现了苯乙烯和异戊二烯的共聚。讨论了超声振动对聚合速率和收率的影响。发现共聚物的组成受振动和聚合势(Epol)的影响。在Epol=+3.30 V时，共聚物中异戊二烯和苯乙烯的摩尔数相等，r1=r2。在该电位下，反应单体浓度也观察到相等，该电位可称为临界聚合电位。当Epol值高于或低于临界聚合电位时，上述性质都不相等。单体反应率由Lewis-Mayo积分方程确定。发现超声振动和聚合势影响反应性比。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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British Polymer Journal

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