甲基丙烯酸甲酯在聚乙烯醇水溶液中的光化学接枝反应  

PHOTOCHEMICAL GRAFT COPOLYMERIZATION OF METHYL METHACRYLATE ONTO POLY(VINYL ALCOHOL)IN AN AQUEOUS SYSTEM

作　　者：黄骏廉[1] 邬青峰 

机构地区：[1]复旦大学材料科学研究所

出　　处：《复旦学报（自然科学版）》1990年第1期37-53,共17页Journal of Fudan University：Natural Science

摘　　要：在紫外光辐照下,二苯甲酮通过夺氢(聚乙烯醇中的氢)反应,可以使甲基丙烯酸甲酯(MMA)在聚乙烯醇(PVA)上接枝。接枝率与反应温度、反应时间、MMA浓度、PVA浓度以及二苯甲酮的用量有关。接枝共聚物用红外光谱及热失重的方法进行了表征。结果表明,接枝物的耐湿性、耐热性都比PVA有较大程度的提高。The PVA radical formed by abstract of hydrogen atom from PVA by diphenyl-methanone at ultraviolet radiation could initiate MMA to polymerize. The graft ratioof MMA onto PVA are dependent on the reaction time, temperature and concentra-tions of MMA, diphenylmethanone and PVA. Graft copolymer was identified by IRand thermo-analytical methods, the results showed that the properties of resistanceto moisture and heat resistance of grafter are much better than PVA.

关 键 词：MMA 聚乙烯醇 接枝共聚 紫外光 

分 类 号：O632.31[理学—高分子化学]