| 溶剂性能对部分解缠结聚氯乙烯有序结构形成的影响 |
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| 引用本文： | 刘远立,朱平平,杨海洋,吴福贵,何平笙.溶剂性能对部分解缠结聚氯乙烯有序结构形成的影响[J].高分子学报,2006(3):528-531. |
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| 作者姓名： | 刘远立 朱平平 杨海洋 吴福贵 何平笙 |
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| 作者单位： | 中国科学技术大学高分子科学与工程系,合肥,230026 |
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| 摘 要： | 一般的高分子非晶态是线团相互穿透的多链凝聚态,是分子固体中非常独特的一种分子凝聚态1～4].而高分子链的缠结是高聚物凝聚态的重要特征之一.缠结是指高分子链之间形成物理交联点,构成网络结构,使分子链的运动受到周围分子的羁绊和限制5],因此缠结对链的构象调整以及链单元
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| 关 键 词： | 解缠结 溶剂性能 聚氯乙烯 有序结构 |
| 收稿时间： | 2005-10-31 |
| 修稿时间： | 2005-12-19 |
INFLUENCE OF SOLVENT UPON THE FORMATION OF ORDERED STRUCTURE IN PARTIALLY DISENTANGLED POLY(VINYL CHLORIDE) |
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| LIU Yuanli,ZHU Pingping,YANG Haiyang,WU Fugui,HE Pingsheng.INFLUENCE OF SOLVENT UPON THE FORMATION OF ORDERED STRUCTURE IN PARTIALLY DISENTANGLED POLY(VINYL CHLORIDE)[J].Acta Polymerica Sinica,2006(3):528-531. |
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| Authors: | LIU Yuanli ZHU Pingping YANG Haiyang WU Fugui HE Pingsheng |
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| Institution: | Department of Polymer and Engineering, University of Science and Technology of China, Hefei 230026 |
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| Abstract: | The partially disentangled polymer samples prepared are expected to crystallize easier than bulk polymers,which can be attributed to much fewer interchain entanglements within and between particles.Poly(vinyl chloride) (PVC) samples were prepared by freeze-extracting the solutions in various solvents and with varying concentrations.The results of FTIR analysis showed that when the concentrations of the solutions were lower than the overlap concentration c*,the PVC samples prepared from the good solvent had more ordered structure due to much fewer interchain entanglements.While the concentrations of the solutions were higher than c*,the PVC samples prepared from the bad solvents had more ordered structure. |
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| Keywords: | Disentanglement Solvent nature Poly(vinyl chloride) (PVC) Orderly structure |
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