作　　者： ; ;

机构地区： 中山大学化学与化学工程学院高分子研究所

出　　处： 《中山大学学报（自然科学版）》 1990年第3期89-95,共7页

摘　　要： 合成了7种具有不同阳离子结构和不同配阴离子的芳基碘、硫(钅翁)盐,并测定了它们的光谱特征。其中以双[4-(二苯锍基)苯基]硫(钅翁)盐(BDS)在甲基丙烯酸缩水甘油酯光聚合中的引发活性最高。用苯酚钠终止氧化环已烯光聚合中的活性中心,从而测得活性中心浓度,发现至少在低转化率(10％)以内,活性中心浓度随聚合时间而线性增加;在相同转化率时,溶液聚合的活性中心浓度高于本体聚合者,表明溶剂可能参与引发作用。 Seven aromatic iodonium and sulfonium salts,with hexafluoroantimonate and hexafluorophosphate as anions,were synthesized.The activity in initiating the bulk photolymerization of glycidyl methacrylate was examined.Bis-[4-(diphenyls- ulfonio)phenyl]-sulfide-bis-hexafluorophosphate was found to be the most effec- tive photoinitiator.The concentration of active centers([P~*])in cyclohexene oxide polymerization was determined by using sodium phenoxide as terminating agent. It was found that[P~*]increased linearly during the early stage of polymerization; at the same monomer conversion,the[p~*]in solution polymerization was higher than that in bulk polymerization,indicating possible involvement of solvent(1, 2- dichloroethane)in the initiation step.

关 键 词： 光引发剂 盐 活性 高分子化合物

领　　域： [化学工程]