大学化学 >> 2025, Vol. 40 >> Issue (4): 100-107.doi: 10.12461/PKU.DXHX202406012

所属专题： 高分子教育教学

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浅析一个活性共聚合动力学问题

顾佳予1, 王思棋2, 凌君1   

  1. 1 浙江大学高分子科学与工程学系, 高分子合成与功能构造教育部重点实验室, 杭州 310058;
    2 中国科学院长春应用化学研究所, 中国科学院生态环境高分子材料重点实验室, 长春 130022
  • 收稿日期:2024-06-11 录用日期:2024-09-11 发布日期:2025-04-25
  • 通讯作者: 凌君 E-mail:lingjun@zju.edu.cn
  • 基金资助:
    国家自然科学基金(22271252)

Kinetics of Living Copolymerization: A Brief Discussion

Jiayu Gu1, Siqi Wang2, Jun Ling1   

  1. 1 MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China;
    2 Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2024-06-11 Accepted:2024-09-11 Published:2025-04-25
  • Contact: Jun Ling E-mail:lingjun@zju.edu.cn

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摘要： 聚合动力学是高分子化学课程中的重点，因其高度依赖理论推导，也是教学的难点。理想的活性可控均聚合应符合一级动力学特征，而当体系推广至二元共聚合时，聚合物组成空间的复杂性急剧扩大，难以直接将均聚反应的动力学特征进行知识迁移。本文针对二元无规活性共聚合的单体消耗动力学这一问题，从理论推导和蒙特卡洛模拟两个角度做出解答，验证了活性共聚合动力学的复杂性，证明了只有在两种特定条件下二元无规活性共聚合的单体消耗才会遵守一级动力学，为高分子化学课程教学提供新的教学思路。

关键词: 高分子化学, 无规共聚, 聚合动力学

Abstract: As one of the key points in “Polymer Chemistry” course, the kinetics of polymer is difficult to instruct due to its high dependence on theoretical derivation. Ideal living and controlled polymerizations typically exhibit a first-order kinetic characteristic. However, when extending the system to a random copolymerization of two monomers, the complexity of polymer composition space increases significantly, making it difficult to directly transfer knowledge from homopolymerization characteristics. This paper, herein, addresses the monomer consumption kinetics of binary random living copolymerization from both theoretical derivation and Monte Carlo simulation perspectives. It demonstrates the complexity of living copolymerization kinetics and shows that first-order kinetics behavior is only observed under two specific conditions. This work provides new insights for teaching Polymer Chemistry, integrating both theoretical and simulation approaches.

Key words: Polymer chemistry, Random copolymerization, Copolymerization kinetics