对自由基聚合反应中两种情况下聚合度分布的探讨

自由基聚合是高分子化学学习中的重难点。聚合速率、聚合度与聚合度分布都是重要的学习内容,偶合终止、歧化终止及链转移都会使聚合度的分布有差异,且相关文献和教材在链转移情况下对聚合度分布的影响分析的较少,本文从自由基聚合度推导方法出发,对自由基聚合涉及不同终止方式及链转移情况下的聚合度分布进行探讨。本文侧重于对存在链转移的情况下的两种计算方式进行详细地分析,并与实验结果进行对比,从而说明两种计算方式的特点和造成偏差的原因,得出了详细的理论结果,以有助于初学者更好地理解和研究该部分的相关内容。

Discussion on Polymerization Degree Distribution for Radical Polymerization

Radical polymerization is the important content to study the course of polymer chemistry.Polymerization rate,polymerization degree distribution and degree of polymerization are important goals of learning,and then disproportionation termination,coupling termination and chain transfer will contribute to different distribution of polymerization degre and the related documents and materials have less analysized the influence for the polymerization degree distribution under the condition of chain transfer.Based on the method of free radical polymerization degree,the paper discusses the radical polymerization involving polymerization degree distribution of termination in different ways and chain transfer.This article focused on the two kinds of calculation of analysis in detail and compared with the experimental results,under the presence of chain transfer,then showed the characteristics of two kinds of calculation,the cause of deviation and the detailed theoretical results,in order to help beginners better understand and study the part of the related content.