摘要
合成并研究了新型感可见光的光引发体系乙基曙红碘盐。结果表明，该引发剂的物理化学性质和光敏引发效率受其结构、介质性质和浓度等诸多因素影响。在可见光照射下，发生由乙基曙红阴离子向二苯基碘阳离子的电子转移反应，产生具有引发活性的苯自由基和非活性的乙基曙红自由基。测定了光聚合的动力学方程以及聚合物的分子量和分子量分布。
A novel visible-light sensitive ion-pair photoinitiation system diphenyliodonium salt of ethyl esterified eosine has been synthesized and studied.The results showed that its physicochemical properties and photoinitiation efficiency are influenced by its structure,concentration and the properties of the media in which it is in.When exposed to visible light,the photoinitiated electron transfer from the anion to the cation took place,producing initiating phenyl radical and terminating ethyl esterified eosine radical.The kinetic equation of photopolymerization of vinyl monomers with this photoinitiator,molecular weight and distribution have been measured.Finally comparison of the monoiodonium and bisiodonium salts of eosine have been carriedout.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1996年第6期667-674,共8页
Acta Polymerica Sinica
基金
国家自然科学基金
中国科学留学经费择优支持回国工作基金
