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SYNTHESIS OF POLYSTYRENE WITH MIXTURES OF MONO- AND BIFUNCTIONAL INITIATORS

机译:含单官能和双官能引发剂混合物的聚苯乙烯的合成

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This work studies the bulk and nonisothermic polymerization of styrene (S) using mixtures of mono- and bifunctional initiators. The effects on polymerization rate and on molecular weight averages after changes in the global initiator concentration and in the nature of the initiator mixtures were experimentally and theoretically analyzed. The mathematical model was adapted from the literature to admit initiator mixtures and to simulate the applied temperature profiles. Compared to the standard use of monofunctional initiators, the use of initiator mixtures that include bifunctional initiators presents the advantage of reducing the polymerization time, while not deteriorating the final polymer quality. The simulation program accurately describes the evolution of conversion, but exhibits some deviations with the average molecular weights. (C) 1996 John Wiley & Sons, Inc. [References: 17]
机译:这项工作使用单官能和双官能引发剂的混合物研究苯乙烯(S)的本体和非等温聚合。实验和理论分析了总引发剂浓度和引发剂混合物性质改变后对聚合速率和平均分子量的影响。从文献中改编了数学模型,以接纳引发剂混合物并模拟所施加的温度曲线。与标准用途的单官能引发剂相比,包括双官能引发剂的引发剂混合物的使用具有减少聚合时间,同时不降低最终聚合物质量的优点。该模拟程序准确地描述了转化的演变过程,但与平均分子量存在一些偏差。 (C)1996 John Wiley&Sons,Inc. [参考:17]

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