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在我们前面的工作中,以光引发聚合方式合成了环氧端基和侧基的聚丙烯酸正丁酯橡胶,为了比较羧基与环氧基在增韧环氧树脂中的效果,我们仍以光化学方法合成羧端基聚丙烯酸正丁酯。二硫化物有一定的热稳定性,但在光照下极易分解,生成自由基碎片。Otsu等人用有机二硫化物作光引发剂,引发烯类聚合得到有反应活性的聚合物。李妙贞等人对一系列二硫化物的结构与光引发聚合能力间的关系进行了探索,研究了其光引发聚合机理。
In our previous work, poly (n-butyl acrylate) rubber with epoxy end groups and pendant groups was synthesized by photoinitiation polymerization. To compare the effect of carboxyl groups and epoxy groups in the toughening of epoxy resins, we used photochemical Methods Synthesis of carboxyl-terminated poly (n-butyl acrylate). Disulfide has a certain thermal stability, but easily broken down in the light to generate free radical fragments. Otsu et al. Use organic disulfides as photoinitiators to initiate the polymerization of olefins to yield reactive polymers. Li Miaozhen et al. Explored the relationship between the structure of a series of disulfides and the photopolymerization ability, and studied the mechanism of photoinitiation polymerization.