含倍半硅氧烷的大分子光引发剂的合成及其光引发性能

含倍半硅氧烷的大分子光引发剂的合成及其光引发性能 Synthesis and Properties of a Silsesquioxane Containing Macromolecular Photoinitiator 熊英 XIONG Ying 1 first-author 张利萍 ZHANG Liping 2 武青青 WU Qingqing 1 蔡海涛 CAI Haitao 1 武汉大学化学与分子科学学院 武汉大学化学与分子科学学院 College of Chemistry and Molecular Sciences,Wuhan University College of Chemistry and Molecular Sciences,Wuhan University 广州天赐高新材料股份有限公司 广州天赐高新材料股份有限公司 Guangzhou Tinci Materials Technology Co.Ltd. Guangzhou Tinci Materials Technology Co.Ltd. 通过笼型八氯丙基倍半硅氧烷（POSS-Cl）与4-羟基二苯甲酮（HBP）的反应得到一种新型夺氢型大分子光引发剂（POSS-HBP）,利用磁共振谱和红外光谱对其分子结构进行表征.通过实时红外光谱比较研究了光引发剂HBP与POSS-HBP在紫外光照下引发1,6-已二醇二丙烯酸酯（HDDA）的聚合性能.同时,分别考察了POSSHBP和供氢体N,N-二甲基苯胺（DMA）的浓度对HDDA光聚合速率的影响,当POSS-HBP的质量分数为1.0%（以HBP计）,供氢体（DMA）的质量分数为3.0%时,HDDA的光聚合只需要8s,较相同情况下HBP光引发聚合缩短了4s.同时,该聚合材料还具有抗黄变及基本无气味等优点. A novel hydrogen-abstracting macromolecular photoinitiator POSS（polyhedral oligomeric silsesquioxane）-HBP was successfully synthesized by the substitution reaction of octakis（3-chloropropyl）octasilsesquioxane（POSS-Cl）and 4-hydroxybenzophenone（HBP）and was characterized by FT-IR,1 H NMR and 13 C NMR.The photopolymerizations of 1,6-hexanediol diacrylate（HDDA）initiated by HBP and POSS-HBP were studied by the real-time infrared spectroscopy（RT-IR）.Meanwhile,the effects of POSS-HBP and dimethylaniline（DMA）concentration on photopolymerization rate were also investigated,respectively.When the concentration of the POSS-HBP was 1.0%（calculated by the mass of HBP）and the concentration of the hydrogen donor（DMA）was 3.0%,not only the photopolymerization rate was faster than that of HBP with the same concentration（For complete polymerization of HDDA,HBP took 12 s,but POSS-HBP only took 8s）,but also the obtained materials had the features of anti-yellowing and almost odorless.The results showed that POSS-HBP was the more efficient photoinitiator than HBP. 大分子光引发剂 多面体低聚倍半硅氧烷 4-羟基二苯甲酮 光聚合 macromolecular photoinitiator polyhedral oligomeric silsesquioxane（POSS） 4-hydroxybenzophenone photopolymerization 10.14188/j.1671-8836.2015.01.008 TQ314.241 国家自然科学基金（20844005）资助项目 2015-01-01 2021-03-31 1 61