几种光引发剂在微乳液体系中的紫外吸收

The UV Absorption of Some Photoinitiators in Microemulsion Systems

光引发剂在微乳液体系中所处的位置是微乳液光引发聚合反应引发机理研究的关键之一．利用紫外吸收光谱对不同环境中的光引发剂进行考察，但由于其吸收光谱没有明显的变化，因而未能获得较确切的结论［１，２］．本工作研究了光引发剂α－羟基－α，α－二甲基－（对－羟乙...

The UV absorption of α hydroxy α,α dimethyl ( p hydroxyethyloxy) acetophenone(HMHOAP), α hydroxy α,α dimethyl acetophenone(HMAP) and α,α dimethoxy α phenyl acetophenone(DMAP) in different media was investigated. The apparent blue shift of the peak position in O/W microemulsion compared to that in pure oil phase is an evidence of the location of the photoinitiator at the interfacial area. The locus of photoinitiator in microemulsion and its significance in understanding the initiation mechanism were discussed.