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研究了２ Ｎ， Ｎ二乙基二硫代氨基甲酰氧基乙酸苄酯（ Ｂｚ Ｄ Ｃ Ａ） 引发的苯乙烯光聚合反应，发现单体转化率和数均分子量（ Ｍｎ） 都随反应时间而增加，在反应时间相同时随着 Ｂｚ Ｄ Ｃ Ａ 浓度的增加单体转化率升高而 Ｍｎ 降低．聚苯乙烯（ Ｐ Ｓ） 的 Ｍｎ 同单体转化率成线性关系并同理论计算值符合得较好．以２甲基２亚硝基丙烷（ Ｍ Ｎ Ｐ） 为捕捉剂用（ Ｅ Ｐ Ｒ） 技术对聚合反应机理进行了研究．认为 Ｂｚ Ｄ Ｃ Ａ 引发的 Ｓｔ 光聚合是一个“活性”聚合过程
The photopolymerization of styrene initiated by 2-N, N-diethyldithiocarbamoyloxyacetic acid benzyl ester (Bz D C A) was studied and it was found that both monomer conversion and number average molecular weight (Mn) Reaction time increased, with the same reaction time, the monomer conversion increased and the Mn decreased with the increase of Bz D C A concentration. The Mn of polystyrene (P S) has a linear relationship with the monomer conversion and is in good agreement with the theoretical calculation. The mechanism of polymerization was studied by using (2-methyl-2-nitrosopropane) as capture agent (E P R). It is believed that the St photopolymerization initiated by Bz D C A is a “living” polymerization process