APMP与MMA溶液光共聚合的共聚物组成及竞聚率的测定  

The Copolymer Composition and Reactivity Ratios of Photo-induced Copolymerization of APMP and MMA in Solution

作　　者：张婷[1] 

机构地区：[1]漳州师范学院化学与环境科学系,福建漳州363000

出　　处：《漳州师范学院学报（自然科学版）》2009年第2期97-101,共5页Journal of ZhangZhou Teachers College（Natural Science)

摘　　要：在紫外光辐照下,采用溶液聚合获得了4-丙烯酰氧基-1,2,2,6,6-五甲基哌啶醇酯(APMP)和甲基丙烯酸甲酯(MMA)的共聚物,用1H-NMR测定了单体摩尔比分别为10/90,30/70,50/50,70/30,90/10时的聚合物结构.实验结果表明,随着APMP投料比的增加,体系达到较高转化率(50%)所需要的时间越短,并且当体系的转化率高于40%时,共聚物的组成变化较小,基本趋向于稳定.根据1H-NMR的结果利用扩展的Kelen-Tdos方法得到了APMP和MMA的竞聚率分别为0.353(APMP)和0.168(MMA).Copolymerization of 4-acryioyi-1,2,2,6,6-pentamethyl-piperidinyi （APMP） and methyl methacryloyl acid （MMA） was investigated under UV light irradiation. The structures of the copolymers which were initiated from different monomer ratios （10/90, 30/70, 50/50, 70/30, 90/10） were determined by ^1H-NMR. With the increasing of the APMP feed ratio, it could reach higher conversion （50%） in a shorter time. Besides, when the conversion was higher than 40%, the copolymer composition changed little. The monomer reactivity ratios which were caculated from extended Kelen-Tüdos method were 0.353 of APMP and 0.168 of MMA.

关 键 词：光引发 溶液聚合 共聚 竞聚率 

分 类 号：O63[理学—高分子化学]