Analysis and Discussion of Average Molecular Weight and Average Degree of Polymerization in Polymerization Reaction Engineering

Ying HAN; Wen-jie ZHAO

doi:10.14028/j.cnki.1003-3726.2022.06.010

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Analysis and Discussion of Average Molecular Weight and Average Degree of Polymerization in Polymerization Reaction Engineering

更新时间：2022-09-09

- Analysis and Discussion of Average Molecular Weight and Average Degree of Polymerization in Polymerization Reaction Engineering
- Polymer Bulletin Vol. 35, Issue 6, Pages: 84-89(2022)
- 作者机构：
  
  1.吉林建筑大学材料科学与工程学院,长春 130118
  2.长春工业大学化学工程学院,长春 130012
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2022.06.010
  CLC：
- Published：20 June 2022，
  
  Received：21 February 2021，
  
  Revised：26 August 2021，
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Ying HAN, Wen-jie ZHAO. Analysis and Discussion of Average Molecular Weight and Average Degree of Polymerization in Polymerization Reaction Engineering. [J]. Polymer Bulletin 35(6):84-89(2022)
DOI：

Ying HAN, Wen-jie ZHAO. Analysis and Discussion of Average Molecular Weight and Average Degree of Polymerization in Polymerization Reaction Engineering. [J]. Polymer Bulletin 35(6):84-89(2022) DOI： 10.14028/j.cnki.1003-3726.2022.06.010.

摘要

在《聚合反应工程》课程中

聚合反应工程分析是该课程的重要一章

平均分子量和平均聚合度又是该章的重点内容。正确理解和掌握其概念及各种数学表达式的内涵与物理意义

对该知识点的学习乃至整个课程的学习都十分有益。本文首先依据类比法引出数均分子量的表达式

接下来将数量换成重量则得重均分子量的表达式;依据平均分子量、单体分子量以及平均聚合度之间的关系

则又可分别得到数均及重均聚合度的表达式

并就平均分子量及平均聚合度这一知识点所遇到的问题进行了详尽的分析讨论

旨在使学生对平均分子量及平均聚合度能有系统、深刻的认识和把握。

Abstract

In the course of polymerization reaction engineering

polymerization reaction engineering analysis is an important chapter of the course

and the average molecular weight and average degree of polymerization are the key contents of the chapter. Correctly understanding and mastering its concept and the connotation and physical meaning of various mathematical expressions to the study of this knowledge point and even the whole course is very beneficial. In this paper

the expression of number-average molecular weight is firstly derived by analogy method

and then the expression of weight average molecular weight is obtained by replacing the number with weight. According to the relationship of average molecular weight and molecular weight of monomer and the average degree of polymerization

and the expressions of the number average weight and the degree of polymerization were got respectively

and the knowledge of the average molecular weight and average polymerization degree were detailed analyzed and discussed

aiming to enable students to understand and grasp the average molecular weight and average polymerization degree systematically and profoundly.

关键词

聚合反应工程平均分子量平均聚合度单体分析讨论

Keywords

Polymerization reaction engineeringAverage molecular weightAverage degree of polymerizationMonomerAnalyzed and discussed

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College of Chemistry and Chemical Engineering, Xi’an Shiyou University

The Key Laboratory of Chemical Cleaner Production Technology of Jilin Province, Jilin Institute of Chemical Technology

Jilin University of Chemical Technology, The Key Laboratory of Chemical Cleaner Production Technology of Jilin Province

The Key Laboratory of Chemical Cleaner Production Technology of Jilin Province , Jilin Institute of Chemical Technology

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