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首先介绍了紫外光(UV)引发及其常用的自由基光引发剂、光引发的特点、以及与γ射线辐射引发、微波辐射引发和电子束引发等三种引发方式相比较的优缺点等内容。然后就四种主要的光引发高吸水树脂:光引发乙烯基单体溶液聚合制备的高吸水树脂、光引发乙烯基单体接枝聚合制备的高吸水树脂、光引发制备复合高吸水树脂及光引发制备互穿网络(ISPN)高吸水树脂的研究进展进行了详细的阐述。最后指出了紫外光引发制备高吸水树脂需要加强的几个方向,即加强基础理论研究、开发新型高效光引发剂、开发新型复合高吸水树脂以及设计新的聚合工艺等。
Firstly, the characteristics of UV-initiated and its common free-radical photoinitiators, photoinitiation and the advantages and disadvantages of these three triggering methods, such as γ-ray radiation initiation, microwave radiation initiation and electron beam initiation are introduced. . Then, four main photoinitiative superabsorbent resins are induced: a superabsorbent polymer prepared by photoinitiated vinyl monomer solution polymerization, a superabsorbent polymer prepared by photoinitiated graft polymerization of a vinyl monomer, a photoinitiation preparation of a superabsorbent polymer composite, and a light The research progress of ISPN superabsorbent polymer was introduced in detail. At last, the author points out some directions that ultraviolet light needs to be enhanced in preparation of superabsorbent polymer, that is, strengthening basic theoretical research, developing new and efficient photoinitiators, developing new composite superabsorbent and designing new polymerization process.