Application of chain transfer agents in the two-part dispersion polymerization of cross-linked polymer microspheres
Application of chain transfer agents in the two-part dispersion polymerization of cross-linked polymer microspheres
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DOI：
10.1007/s00396-021-04843-4
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发表时间：
2021-05
影响因子：
2.4
通讯作者：
Binbin Lv;Hui Wang;Liang He;Xueyan Nan;Tong Wang;Zhizhou Liu;W. Xia;Pengli Bai
中科院分区：
文献类型：
--
作者：
Binbin Lv;Hui Wang;Liang He;Xueyan Nan;Tong Wang;Zhizhou Liu;W. Xia;Pengli Bai
交联聚合物微球在许多领域具有潜在的应用价值。与种子聚合法相比，双组分分散聚合法是一种极具吸引力的制备微米级交联微球的方法。然而，当前的分散聚合将受到一次加入超过1重量%的交联剂的不利影响，甚至发生凝集。本研究发展了一种链转移剂两步分散聚合制备高交联微球的简便方法。交联剂和转移之间的关系进行了详细的研究，和微球可以同时保持通过添加交联剂乙二醇二甲基丙烯酸酯（EGDMA）的浓度高达10%。
Cross-linked polymer microspheres have potential applications in many fields. Compared with seed polymerization, two-part dispersion polymerization is a very attractive method for preparing micron-sized cross-linked microspheres. However, the current dispersion polymerization would be adversely affected by the addition of more than 1 wt% of cross-linker at a time and even agglutination occurred. In this study, a facile method for the preparation of highly cross-linked microspheres by two-step dispersion polymerization of a chain transfer agent has been developed. The relationship between cross-linker and transfer has been studied in detail, and microspheres can be simultaneously maintained by adding the cross-linker ethylene glycol dimethacrylate (EGDMA) at concentrations of up to 10%.