| ~（13）C－NMR研究乙烯醇－醋酸乙烯酯共聚物序列结构 |
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| 引用本文： | 鲁非,朱清仁,洪昆仑,高建峰.~（13）C－NMR研究乙烯醇－醋酸乙烯酯共聚物序列结构[J].中国科学技术大学学报,1996(1). |
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| 作者姓名： | 鲁非 朱清仁 洪昆仑 高建峰 |
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| 作者单位： | 中国科技大学结构研究开放实验室，合肥联合大学化工系 |
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| 摘 要： | １３Ｃ－ＮＭＲ方法对８种不同的国产乙烯醇－醋酸乙烯酯共聚物序列结构作了观测和表征．指出这一直接由ＰＶＡｃ（醋酸乙烯酯）皂化生成的共聚物均具有嵌段物性，并观测到它们与聚合度之间的关系．根据这些结果讨论了沿ＰＶＡｃ链皂化机制
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| 关 键 词： | ~（13）C核磁共振，聚乙烯醋酸乙烯酯共聚物，序列结构，嵌段共聚 |
Inverstigations of Sequence Distribution in Vinyl Alcohol-Vinyl Acetate Copolymers by(13)C-NMR |
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| Lu Fei,Zhu Qingren, Hong Kunlun.Inverstigations of Sequence Distribution in Vinyl Alcohol-Vinyl Acetate Copolymers by(13)C-NMR[J].Journal of University of Science and Technology of China,1996(1). |
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| Authors: | Lu Fei Zhu Qingren Hong Kunlun |
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| Abstract: | In the 13C-NMR Spectra (22.5MHz) of domestic vinyl alcohol-vinyl acetate copolymers prepared by saponification of poly (vinyl acetate) and there well-resolved methyiene carbon lines around 40ppm are obtained,which can be assigned to three dicad sequences,(OH,OH) t (OH,OAc) and (OAc,OAc)with increasing field strength. From the relative intensities, the quantative determination of the composition, sequence distrbution and block character in the copolymer have become possible.The blockiness of the directly saponified copolymers has aslo been discussed. |
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| Keywords: | ?13)C-NMR vinyl alcohol-vinyl acetate copolymers sequence distribution blockiness |
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