光固化聚氨酯丙烯酸酯杂化材料的核磁共振谱  

On the NMR Spectra of UV-Curable Polyurethane-acrylate Hybrid Material

作　　者：张玲[1] 曾兆华[1] 杨建文[1] 张夏虹[1] 陈用烈[1] 

机构地区：[1]中山大学高分子研究所,广州510275

出　　处：《应用化学》2004年第3期291-295,共5页Chinese Journal of Applied Chemistry

基　　金：广东省自然科学基金 (0 2 172 7);中山大学青年教师科研启动基金 (0 1 3 112 0 113 0 0 19)资助课题

摘　　要：采用固体13 CNMR和2 9SiCP/MASNMR技术研究光固化聚氨酯丙烯酸酯 /SiO2 杂化材料 (PUA TMSPM ) /SiO2 中有机、无机相的反应情况。固体13 CCP/MASNMR谱图结果显示 ,该 (PUA TMSPM ) /SiO2杂化体系中的双键在光固化后已基本反应完全 ;从固体2 9SiCP/MASNMR谱分析得出 ,在 (PUA TMSPM ) /SiO2 光固化杂化材料中 ,没有未参与水解反应的TEOS和TMSPM ,该杂化材料硅氧烷的平均缩聚度Rex为0 81。The reaction extent of organic phase, as well as the degree of hydrolysis and condensation reactions of inorganic phase of UV-curable polyurethane acrylate/silica hybrid(PUA-TMSPM)/SiO 2 material were examined by means of solid-state 13C and 29Si CP/MAS NMR. The results showed that the conversion of acrylate double bond was almost complete on UV irradiation. Solid-state 29Si CP/MAS NMR spectra revealed that there were no unreacted TEOS and TMSPM and the mean condensation degree of the silanes of the hybrid material was 0.80.

关 键 词：聚氨酯丙烯酸酯/SiO2杂化材料 光固化 溶胶-凝胶法 固体^13C、^29Si CP/MAS NMR 

分 类 号：O631[理学—高分子化学]