| 高分子共混物中Friedel-Crafts烷基化反应原位增容与催化降解机理 |
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| 引用本文： | 郭正虹,方征平. 高分子共混物中Friedel-Crafts烷基化反应原位增容与催化降解机理[J]. 高等学校化学学报, 2009, 30(9): 1898-1903 |
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| 作者姓名： | 郭正虹 方征平 |
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| 作者单位： | 1. 浙江大学宁波理工学院, 高分子材料与工程研究所, 宁波 315100;2. 浙江大学高分子复合材料研究所, 教育部高分子合成与功能化重点实验室, 杭州 310027 |
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| 基金项目： | 宁波市自然科学基金(批准号:2008A610057)资助 |
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| 摘 要： | 采用GPC方法对共混组分的分子量、接枝率和降解度等数据进行分析, 发现AlCl3催化剂对PS/POE共混物的作用表现在原位增容和催化降解两个方面. 结合Friedel-Crafts烷基化反应的特点细化反应过程, 发现PS/POE共混物在AlCl3作用下发生接枝反应时, 有大量碳正离子出现, 而碳正离子周围的电子重排会导致分子链断裂, 从而引起共混组分出现大幅度降解. PS/POE/AlCl3共混物中原位接枝与催化降解是一对竞争性反应, 同时存在, 并相互竞争.
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| 关 键 词： | 原位增容 Friedel-Crafts烷基化反应 PS-g-POE接枝共聚物 催化降解 |
| 收稿时间： | 2008-11-18 |
Mechanism of in Situ Compatibilization and Degradation by Friedel-Crafts Alkylation Reaction for Polymer Blends |
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| GUO Zheng-Hong,FANG Zheng-Ping. Mechanism of in Situ Compatibilization and Degradation by Friedel-Crafts Alkylation Reaction for Polymer Blends[J]. Chemical Research In Chinese Universities, 2009, 30(9): 1898-1903 |
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| Authors: | GUO Zheng-Hong FANG Zheng-Ping |
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| Affiliation: | 1. Department of Biochemical and Chemical Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China;2. Institute of Polymer Composites, Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The Friedel-Crafts alkylation reaction is common in organic synthesis.However,only a few articles on the Friedel-Crafts alkylation reaction for in situ compatibilization of PS and polyolefin blends have been published so far.The mechanism of Friedel-Crafts alkylation reaction adopted in PS/polyolefin blends keeps unclear,and the concerned study is not sufficient.GPC analysis for PS/POE blends showed that the effects of AlCl3 catalyst laid on in situ compatibilization and degradation.On the basis of detailed... |
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| Keywords: | In situ compatibilization Friedel-Crafts alkylation reaction PS-g-POE copolymer Degradation |
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