聚氨酯型高分子二苯甲酮光引发剂的制备及性能  

Preparation and Properties of Polyurethane-Type Polymeric Benzophenone Photoinitiators

作　　者：韦军[1] 郑小娟[2] 蒋乙峰[2] 

机构地区：[1]盐城工学院材料工程学院,江苏盐城224051 [2]常州大学材料科学与工程学院,江苏常州213164

出　　处：《高分子材料科学与工程》2015年第4期42-46,共5页Polymer Materials Science & Engineering

基　　金：江苏省高校自然科学研究重大项目(11KJA430010);江苏省"青蓝工程"(学科带头人);江苏省生态环境重点实验室开放项目(EML201205)

摘　　要：合成了含有2个活性羟基的二苯甲酮单体4-(2,3-二羟基)丙氧基二苯甲酮(HPBP),然后将HPBP、二异氰酸酯和N-甲基二乙醇胺进行逐步聚合反应,制备了侧链含二苯甲酮,主链含共引发剂胺的聚氨酯型高分子二苯甲酮光引发剂。红外光谱和核磁共振氢谱证实了高分子光引发剂的结构;紫外-可见吸收光谱研究表明高分子光引发剂的结构对二苯甲酮单元的最大紫外吸收几乎没有影响;用光致差示扫描量热仪研究了高分子光引发剂和HPBP引发聚氨酯丙烯酸酯(PUA)的光聚合反应,结果表明,高分子光引发剂的主链结构对其引发性能影响显著。4-( 2,3-Dihydroxy) propoxy-benzophenone( HPBP),with two active hydroxyl groups,was synthesized.Polyurethane( PU)-type polymeric photoinitiators comprising side chain benzophenone and in-chain co-initiator amine were synthesized through step polymerization of HPBP,diisocyanates and N-methyl diethanolamine. FT-IR and1H-NMR analyses confirm the structure of polymeric photoinitiators. UV-vis spectra show the structures of polymeric photoinitiators have no obvious effect on the maximal absorption of benzophenone moieties. Photopolymerization of polyurethane acrylate( PUA),initiated with polymeric photoinitiators and HPBP,was studied by photo-DSC. The results indicate that the structure of polymeric photoinitiators has significant influence on their photoefficiency.

关 键 词：二苯甲酮 高分子光引发剂 聚氨酯 光聚合 

分 类 号：TQ314.241[化学工程—高聚物工业]