| 甲基丙烯酸甲酯的微波聚合特性和产物结构 |
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| 引用本文： | 包建军,张爱民.甲基丙烯酸甲酯的微波聚合特性和产物结构[J].高分子材料科学与工程,2002,18(2):78-81,85. |
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| 作者姓名： | 包建军 张爱民 |
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| 作者单位： | 高分子材料工程国家重点实验室,四川大学高分子研究所,四川,成都,610065 |
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| 基金项目： | 国家自然科学基金重点项目 (2 0 0 340 0 6 )，国家自然科学基金面上项目 (2 990 4 0 0 4 ) |
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| 摘 要： | 在微波辐射下进行甲基丙烯酸甲酯（MMA）的无乳化剂乳液聚合，发现在微波辐照下MMA聚合速率较加热有较大的提高，微波辐照制备的聚甲基丙烯酸甲酯（PMMA）乳液粒子形状规整，粒径分散系数1．03，达到单分散要求，微波制备乳液的数均分子量与常规加热接近，但分子量分布变窄，微波和热无乳化剂聚合的PMMA的热解过程一致，在200℃－390℃有三个分解峰，与有乳化剂聚合有很大差异，FT－IR，13C－NMR表明无乳化剂聚合的PMMA序列结构以间同为主，微波聚合略微降低PMMA的立构规整度。
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| 关 键 词： | 微波 无乳化剂乳液聚合 聚甲基丙烯酸甲酯 立构规整性 产物结构 |
| 文章编号： | 1000-7555(2002)02-0078-04 |
POLYMERIZATION OF MMA UNDER MICROWAVE IRRADIATION AND THE STRUCTURE OF RESULT POL YMER |
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| BAO Jian jun,ZHANG Ai min.POLYMERIZATION OF MMA UNDER MICROWAVE IRRADIATION AND THE STRUCTURE OF RESULT POL YMER[J].Polymer Materials Science & Engineering,2002,18(2):78-81,85. |
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| Authors: | BAO Jian jun ZHANG Ai min |
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| Abstract: | The emulsifier free emulsion polymerization of MMA was carried out under microwave irradiation, which showed a increased reaction speed than normal heating procedure. The configuration and dimension of emulsion particle of PMMA have good uniformity, and the dispersity index of particle dimension is 1.03 , which achieves the standard of monodispersity. The numeric average MW of PMMA prepared under microwave is approximate to that of the heating, with a narrower distribution. The PMMA prepared by emulsifier free polymerization whether or not under microwave irradiation has same decomposition process, which present three major decomposition peaks in its DTG curve. This phenomenon is totally different from that of PMMA prepared by polymerization with emulsifier. FT IR and 13 C NMR analysis verify that the essential microstructure of prepared PMMA is syndiotactic structure, and the stereoregularity of polymer is reduced by microwave slightly. |
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| Keywords: | microwave emulsifier free emulsion polymerization PMMA stereoregularity |
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