原位红外探究甲基丙烯酸缩水甘油酯的光聚合  

Investigation of photoinitiated polymerization of glycidyl methacrylate by in situ real-time infrared spectroscopy

作　　者：何俊杰 李伟晨 张发爱[1] HE Jun-jie;LI Wei-chen;ZHANG Fa-ai(School of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541004

出　　处：《广西大学学报（自然科学版）》2021年第5期1267-1274,共8页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(21664005)。

摘　　要：采用原位红外光谱研究了甲基丙烯酸缩水甘油酯(GMA)的光引发聚合,探究了光引发剂的种类、浓度以及溶剂等因素对光引发聚合的反应速率、单体转化率和产物热性能的影响。结果表明,引发剂种类对光聚合得到的PGMA热稳定性影响较小,但对其玻璃化转变温度造成不同程度的影响。随着光引发剂浓度的增加,GMA的反应程度先增加后减少;在使用1.5%光引发剂2,2-甲氧基苯基苯乙酮的情况下,可以快速制备出单体转化率高的PGMA。溶剂存在下GMA光聚合速率和单体转化率下降,增加溶剂的极性,可以提高光聚合速率和单体转化率。The photoinitiated polymerization of glycidyl methacrylate(GMA)was studied by in situ infrared spectroscopy.The effects of the type and concentration of photoinitiators and solvents on the reaction rate,monomer conversion and thermal properties of the product were investigated.The results show that the type of initiator has little effect on the thermal stability of PGMA,but has different effects on the glass transition temperature.With the increase of the concentration of photoinitiator,the reaction degree of GMA first increased and then decreased.Under the condition of 1.5%photoinitiator 2,2-methoxyphenylacetophenone,PGMA with high monomer conversion was obtained quickly.In the presence of solvent,polymerization rate and monomer conversion of GMA photopolymerization decreased and enhanced with the solvent polarity.

关 键 词：甲基丙烯酸缩水甘油酯 光引发聚合 原位红外光谱 单体转化率 玻璃化转变温度 

分 类 号：TQ316.32[化学工程—高聚物工业]