| 具有排除体积的两维高分子链的静态标度律 |
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| 引用本文： | 许国强,丁建东.具有排除体积的两维高分子链的静态标度律[J].复旦学报(自然科学版),1997,36(4):361-369. |
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| 作者姓名： | 许国强 丁建东 |
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| 基金项目： | 国家“攀登计划”资助，国家自然科学基金，国家科委青年基金，国家教委博士点专项基金 |
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| 摘 要： | 运用四位置模型对具有排除体积的两维高分子链进行ＭｏｎｔｅＣａｒｌｏ模拟和标度分析，为了提高长链的抽样效率，还提出了被称为“链段伸展法”的抽样方法。对单个自避行走链的模拟结果表明，两维ＳＡＷ链有育明显不同于夫规飞行链以及三维ＳＡＷ链的特点。
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| 关 键 词： | 标度律 排除体积效应 高分子链 蒙特卡罗模拟 |
Static scaling law of two-dimensional macromolecular chains with excluded volume |
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| Xu Guoqiang, Ding Jiandong, Yang Yuhang.Static scaling law of two-dimensional macromolecular chains with excluded volume[J].Journal of Fudan University(Natural Science),1997,36(4):361-369. |
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| Authors: | Xu Guoqiang Ding Jiandong Yang Yuhang |
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| Institution: | Department of Macromolecular Science |
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| Abstract: | Two dimensional macromolecular chains with excluded volume are studied withMonte Carlo simulation based on four-site bond fluctuation model and corresponding scalinganalysis is carried out. A novel sampling method,called"segment extension method", is putforward in order to enhance the sampling effciency of long chain. A simulation for single selfavoiding walk(SAW)chain show that two-dimensional SAW chain has a quite different character with both RW chain and three-dimensional SAW chain. The excluded volume effect inthe multiple-chain system is gradually screened out with increasing the segment Concentration. The chain size in the semi-dilute solution is in inverse proportion to the segment concentration for the two-dimensional SAw chains. |
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| Keywords: | scaling law excluded volume effect Monte Carlo simulationl four-site model segment extension method |
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