摘要
通过3种二异氰酸酯、2-(2,3-二羟基)丙氧基硫杂蒽酮(HPTX)以及N-甲基二乙醇胺(MDEA)进行逐步聚合反应,将硫杂蒽酮结构及共引发剂胺结构引入到同一高分子链上,制备了侧链含有硫杂蒽酮,主链含有共引发剂胺的聚氨酯型高分子光引发剂(PU-HMTX、PU-IMTX和PU-TMTX)。傅里叶变换红外光谱和核磁共振氢谱证实了高分子光引发剂的结构。紫外光谱表明,高分子链结构对硫杂蒽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计(photo-DSC)研究聚氨酯型高分子光引发剂引发聚氨酯丙烯酸酯树脂(PUA)的光聚合反应,结果表明,PU-IMTX是该文合成的引发剂中引发PUA光聚合最有效的光引发剂。
Polyurethane-type polymeric photoinitiators containing side-chain thioxanthone and in-chain coinitiator amine were synthesized through stepwise polymerization of diisocyanate, 2- （2,3-dihydroxy） propoxy-thioxanthone （HPTX） and N-methyl diethanolamine （MDEA）. The thioxanthone and coinitiator amine structures were successfully introduced into the backbones of polymeric photoinitiators. FTIR and ~HNMR analyses confirmed the structures of polymeric photoinitiators. UV-Vis spectra indicated that the macromoleeular chain had no obvious effect on the maximal absorption of thioxanthone moieties. Photopolymerization of polyurethane acrylate resin （PUA）, initiated by polyurethane-type polymeric thioxanthone photoinitiators,was studied through photo differential scanning calorimetry （photo-DSC）. The results indicate that, among the photoinitiators synthesized in this article, PU-IMTX is the most efficient photoinitiator for the photopolymerization of PUA.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2012年第9期910-915,共6页
Fine Chemicals
基金
江苏省高校自然科学研究重大项目(11KJA430010)
江苏省自然科学基金(BK2009170)
盐城工学院自然研究基金面上项目(XKY2011001)~~
关键词
高分子光引发剂
聚氨酯
硫杂蒽酮
光聚合
共引发剂
粘合剂
polymeric photoinitiator
polyurethane
thioxanthone
photopolymerization
coinitiator
adhesives
