The phase inversion (PI) during the bulk polymerization of the styrene–polybutadiene system (high impact polystyrene manufacturing process) is empirically and theoretically studied in this article. In the experimental work, a series of reactions were performed with benzoyl peroxide as initiator and at temperatures considered of industrial interest (80°C and 90°C), varying also the reactor stirring level. PI was determined by offline viscosity measurements and verified by scanning transmission electron microscopy. The rheological behavior of each reacting system was analyzed and an empirical correlation to predict its apparent viscosity from fundamental reaction parameters was derived. This was achieved successfully for both before and after the PI point. POLYM. ENG. SCI., 60:491–502, 2020. © 2019 Society of Plastics Engineers

中文翻译：

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影响相转化过程的机制和条件。高抗冲聚苯乙烯的情况

本文对苯乙烯-聚丁二烯系统（高抗冲聚苯乙烯生产工艺）的本体聚合过程中的相转化（PI）进行了经验和理论研究。在实验工作中，以过氧化苯甲酰为引发剂，并在被认为具有工业价值的温度（80°C和90°C）下，进行了一系列反应，还改变了反应器的搅拌水平。通过离线粘度测量确定PI，并通过扫描透射电子显微镜验证。分析了每个反应体系的流变行为，并得出了根据基本反应参数预测其表观粘度的经验相关性。在PI点之前和之后都成功实现了这一目标。POLYM。ENG。SCI。，60：491–502，2020.©2019塑料工程师协会