高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (2): 332.

• 研究论文 • 上一篇    下一篇

乙烯和丙烯自由基共聚反应的多尺度模拟模型

刘玉华,刘鸿,刘靖尧,吕中元   

  1. 吉林大学理论化学研究所, 理论化学计算国家重点实验室, 长春 130023
  • 收稿日期:2010-08-17 修回日期:2010-10-20 出版日期:2010-02-10 发布日期:2011-02-23
  • 通讯作者: 吕中元 E-mail:luzhy@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20974040, 50803002, 20973077)、霍英东教育基金优选资助课题(批准号: 114018)和教育部新世纪优秀人才支持计划.

Multi-scale Simulation Model on the Co-polymerization Between Ethylene and Propylene

LIU Yu-Hua, LIU Hong, LIU Jing-Yao, LÜ Zhong-Yuan*   

  1. State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
  • Received:2010-08-17 Revised:2010-10-20 Online:2010-02-10 Published:2011-02-23
  • Contact: Lü Zhong-Yuan E-mail:luzhy@jlu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20974040, 50803002, 20973077)、霍英东教育基金优选资助课题(批准号: 114018)和教育部新世纪优秀人才支持计划.

摘要: 结合量子化学和传统过渡态理论计算了乙烯和丙烯自由基聚合反应的速率常数. 利用速率常数定义了聚合反应几率(Pijl),构造了乙烯丙烯共聚合反应的粗粒化动力学模拟模型,并利用该模型研究了不同组成比例的乙烯丙烯共聚合反应. 发现反应速率常数和链端自由基周围的单体浓度都影响链上组分的序列分布.

关键词: 自由基聚合, 速率常数, 聚合反应几率

Abstract: A combined quantum chemical and transition state theory rate constant calculation scheme is performed on different radical reactions involving ethylene and propylene to calculate the rate constants, by which, we can define normalized polymerization probabilities (Pijl). Using these polymerization probabilities, we propose a coarse grained molecular dynamics simulation model to study the co-polymerization between ethylene and propylene. We find that the rate constants and the number of monomers around the chain radical ends strongly influence the chain length distribution and the segment distribution along the chain backbone.

Key words: free-radical polymerization, rate constant, polymerization probabilities

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