| 甲基丙烯酸缩水甘油酯与甲基丙烯酸甲酯的共聚合及竞聚率测定 |
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| 引用本文： | 王飞宇,高保娇.甲基丙烯酸缩水甘油酯与甲基丙烯酸甲酯的共聚合及竞聚率测定[J].功能高分子学报,2008,21(3). |
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| 作者姓名： | 王飞宇 高保娇 |
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| 作者单位： | 中北大学化工系,太原,030051 |
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| 摘 要： | 以N,N-二甲基甲酰胺(DMF)为溶剂,实施了甲基丙烯酸缩水甘油酯(GMA)与甲基丙烯酸甲酯(MMA)的溶液共聚合,测定了共聚物P(GMA-co-MMA)的红外光谱(FT-IR),对其化学结构进行了表征,并采用差示扫描量热法(DSC)测定了共聚物的玻璃化转变温度(Tg).改变两单体投料比进行共聚合,采用化学分析法测定低转化率下(<7%)共聚物组成,重点研究了两单体的竞聚率.结果表明:GMA与MMA的共聚合易于进行,P(GMA-co-MMA)的玻璃化转变温度(Tg)介于均聚物PGMA(72℃)与PMMA(106℃)之间,当n(GMA)/n(MMA)=4/6时,共聚物的Tg为9l℃.采用FR和KT 2种作图法及YBR计算法对单体的竞聚率进行了计算和比较,结果表明:KT和YBR法较为准确,以DMF为溶剂时,GMA与MMA的竞聚率分别为2.14与0.69.
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| 关 键 词： | 甲基丙烯酸缩水甘油酯 甲基丙烯酸甲酯 溶液共聚合 竞聚率 |
Copolymerization of GMA and MMA and Determination of Monomer Reactivity Ratio |
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| WANG Fei-yu,GAO Bao-jiao.Copolymerization of GMA and MMA and Determination of Monomer Reactivity Ratio[J].Journal of Functional Polymers,2008,21(3). |
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| Authors: | WANG Fei-yu GAO Bao-jiao |
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| Institution: | WANG Fei-yu,GAO Bao-jiao(Department of Chemical Engineering,North University of China,Taiyuan 030051,China) |
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| Abstract: | The copolymerization of glycidyl methacrylate(GMA) and methyl methacrylate(MMA) was performed in a solution copolymerization system with N,N-dimethylformamide(DMF) as solvent.The chemical structure of the copolymer P(GMA-co-MMA) was characterized by infrared spectrum(FT-IR),and the glass transfer temperature(T_g) of the copolymer was determined using differential scanning calorimeter(DSC).The reactivity ratios of monomers were measured.Varying the feed ratio of the monomers,copolymers with different composi... |
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| Keywords: | glycidyl methacrylate methyl methacrylate solution copolymerization reactivity ratio |
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