| 交联大分子的透射电镜分析 |
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| 引用本文： | 刘冬平,刘遵峰,刘雪萍,孙瑞敏,陈俊,栗方星.交联大分子的透射电镜分析[J].南开大学学报,2005,38(2):88-92. |
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| 作者姓名： | 刘冬平 刘遵峰 刘雪萍 孙瑞敏 陈俊 栗方星 |
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| 作者单位： | 南开大学,化学系,天津,300071;南开大学,化学系,天津,300071;南开大学,化学系,天津,300071;南开大学,化学系,天津,300071;南开大学,化学系,天津,300071;南开大学,化学系,天津,300071 |
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| 摘 要： | 用含有不同羟值的聚乙烯醇缩要下醛与4,4′-二苯甲烷二异氰酸组成的交联聚合体系,通过分子内反应和分子间反应之间的竞争,使交联过程得以控制.合成了可溶解的分子内交联大分子.再用透射电镜对其进行观察,电镜照片显示,合成的交联大分子具有特殊结构,并显示了交联大分子的形成过程,首先形成前交联大分子(独立的球型体),然后前交联大分子再继续反应,形成分子内交联大分子.
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| 关 键 词： | 交联 交联大分子 分子内反应 分子间反应 透射电镜 |
| 文章编号： | 0465-7942(2005)02-0088-05 |
| 修稿时间： | 2004年10月18 |
Analysis of Intramolecularly Cross-linking Macromolecule by Transmission Electron Microscopy |
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| Liu Dongping,Liu Zunfeng,Liu Xueping,Sun Ruimin,Chen Jun,Li Fangxing.Analysis of Intramolecularly Cross-linking Macromolecule by Transmission Electron Microscopy[J].Acta Scientiarum Naturalium University Nankaiensis,2005,38(2):88-92. |
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| Authors: | Liu Dongping Liu Zunfeng Liu Xueping Sun Ruimin Chen Jun Li Fangxing |
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| Abstract: | A controlled cross-linking polymerization system comprising of inter-and intramolecular reactions was designed and soluble intramolecularly cross-linking macromolecule (ICM) was synthesized from polyvinyl butyral (PVB) and 4,4'-diphenylmethane diisocyanate (MDI). Transmission Electron Microscopy (TEM) photographs show a special structure and chain propagation process of ICM, Pre-ICM, the globule with a well-defined and stable shape, is formed in the early stage of the polymerization, and then Pre-ICMs connect each other to form ICMs. |
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| Keywords: | cross-linkin g intramolecularly cross-linking macromolecule (ICM) intramolecular reaction TEM |
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