超浓乳液聚合氧化还原引发体系的研究进展

The Progress of study on Redox Initiator in Concentrated Emulsion Polymerization

介绍了超浓乳液的三个主要特点。从体系状态,单体含量,聚合速度,相对分子质量,聚合物形态和设备利用率方面比较了超浓乳液聚合与传统乳液聚合及本体聚合的区别。指出超浓乳液聚合中使用热分解引发剂所产生的问题及使用氧化还原引发剂的原因。还简单介绍了氧化还原引发体系的分类,回顾了前人在超浓乳液聚合工作中不同单体体系使用的氧化还原引发剂的情况,总结了不同单体体系中氧化剂还原剂的最佳配比,以及它们对动力学、相对分子质量的影响。最后展望了超浓乳液聚合新的发展方向。

The three main characters of concentrated emulsion were presented in this paper. The eomparison of concentrated emulsion polymerization, traditional emulsion polymerization and bulk polymerization was carried out in terms of system status, monomer content, polymerization rate, molecular weight, form of the polymer and the utilization ratio of equipment. The problem of using thermal deconrposition initiator in concentrated emulsion polymerization was also pointed out as well as the reason of using redox initiator. The classification of redox initiator was introduced simply, the applications of redox initiator in different monomer system in emulsion polymerization were reviewed, and the optimal ratios of redox initiator in different monomer systems ware summarized as well as the effects of it on polymerization kinetics and molecular weight. The new development prospects of concentrated emulsion were mentioned in the end of this paper.