高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (01): 144.doi: 10.3969/j.issn.0251-0790.2012.01.024

• 物理化学 • 上一篇    下一篇

非等活性加核自缩合乙烯基聚合体系回转半径的Monte Carlo模拟

郑越1, 王海军1,2,3   

  1. 1. 河北大学化学与环境科学学院, 保定 071002;
    2. 河北大学教育部药物化学与分子诊断重点实验室, 保定 071002;
    3. 中国科学院国际材料物理中心, 沈阳 110016
  • 收稿日期:2011-03-29 出版日期:2012-01-10 发布日期:2011-12-20
  • 通讯作者: 王海军,男,博士,教授,博士生导师,主要从事高分子凝聚态理论研究.E-mail:whj@mail.hbu.cn E-mail:whj@mail.hbu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20873035)资助.

Monte Carlo Simulation of the Radius of Gyration of Hyperbranched Polymers Formed in Self-condensing Vinyl Polymerization System in the Presence of Core Initiators with Unequal Reactivity

ZHENG Yue1, WANG Hai-Jun1,2,3   

  1. 1. College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China;
    2. Key Laboratory of Medical Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, Baoding 071002, China;
    3. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2011-03-29 Online:2012-01-10 Published:2011-12-20

摘要: 利用Monte Carlo模拟方法研究了加核自缩合乙烯基聚合反应体系中超支化高分子的二次回转半径随双键转化率的变化情况. 在模拟中, 重点考察了两类活性基团的反应活性差异、 引发核的配比及基团数等因素对超支化高分子均方回转半径的影响. 结果表明, 上述因素对于超支化高分子的尺度有着显著影响, 从而可为调控体系中高分子的空间尺度提供有效途径.

关键词: 自缩合乙烯基聚合, 非等活性, 均方回转半径, Monte Carlo模拟

Abstract: The second radius of gyration of hyperbranched polymers formed in self-condensing vinyl polymerization system in the presence of core initiators was studied by the method of Monte Carlo simulation, in which the unequal reactivity was taken into account. As a result, the roles of the reactivity differences in two types of active groups, the molar ratio and functionality of core initiators were mainly discussed, and it was found that these factors could give rise to a significant influence on the radius of gyration of hyperbranched polymers with and without a core initiator. This provides some useful clues for regulating the dimension of the hyperbranched polymers in the relevant experiments.

Key words: Self-condensing vinyl polymerization, Unequal reactivity, Radius of gyration, Monte Carlo simulation

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