The Physical Meaning of Extent of Reaction (<italic style="font-style: italic">p</italic>) in Equations about the Number Average of Polymerization Degree or Gel Point in Condensation Polymerization

GE Yi-jie; LI Yin-wen; MA Deng-xue; XU Shou-fang

doi:10.14028/j.cnki.1003-3726.2023.03.013

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The Physical Meaning of Extent of Reaction (p) in Equations about the Number Average of Polymerization Degree or Gel Point in Condensation Polymerization

更新时间：2023-01-16

- The Physical Meaning of Extent of Reaction (p) in Equations about the Number Average of Polymerization Degree or Gel Point in Condensation Polymerization
- Polymer Bulletin Vol. 36, Issue 3, Pages: 385-389(2023)
- 作者机构：
  
  临沂大学材料科学与工程学院，临沂　276005
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2023.03.013
  CLC：
- Published：20 March 2023，
  
  Received：08 June 2022，
  
  Revised：09 August 2022，
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GE Yi-jie, LI Yin-wen, MA Deng-xue, XU Shou-fang. The Physical Meaning of Extent of Reaction (p) in Equations about the Number Average of Polymerization Degree or Gel Point in Condensation Polymerization. [J]. Polymer Bulletin 36(3):385-389(2023)
DOI：

GE Yi-jie, LI Yin-wen, MA Deng-xue, XU Shou-fang. The Physical Meaning of Extent of Reaction (p) in Equations about the Number Average of Polymerization Degree or Gel Point in Condensation Polymerization. [J]. Polymer Bulletin 36(3):385-389(2023) DOI： 10.14028/j.cnki.1003-3726.2023.03.013.

摘要

反应程度

影响线型缩聚聚合度以及体型缩聚凝胶点

因此缩聚反应中涉及到反应程度

的计算公式特别多。因缩聚反应是A和B两个官能团之间的反应

聚合体系中有A官能团的反应程度

B官能团的反应程度

以及体系总反应程度

三种不同物理意义的反应程度。本文从公式推导过程出发

明确和比较了线型缩聚聚合度求算和体型缩聚凝胶点预测5个常用公式中涉及到的反应程度

的物理意义。通过对教材中两个练习题的改动

主动暴露学生薄弱知识点

有助于加深学生对反应程度的理解。

Abstract

The extent of reaction (

) is an important variable in condensation polymerization. Many equations about the number average of polymerization degree or gel point contain the extent of reaction. There are three kinds of extent of reaction

including the extent of reaction of functional group A (

)

the extent of reaction of functional group B (

)

and the extent of reaction of the polymerization system (

). Clarifying the physical meaning of the extent of reaction is vital for mastering the equations. From the derivation of these five commonly used equations

the physical meaning of extent of reaction was clarified and compared. By changing the two exercises in the textbook

flaws in students' knowledge can be exposed actively

which is helpful for deepening students' understanding of the extent of reaction.

关键词

缩聚反应反应程度数均聚合度凝胶点

Keywords

Condensation polymerizationExtent of reactionNumber average polymerization degreeGel point

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College of Science, Nanjing Forestry University

Dept of Appl Chem Qingdao Univ

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The Physical Meaning of Extent of Reaction (p) in Equations about the Number Average of Polymerization Degree or Gel Point in Condensation Polymerization

DOI：10.14028/j.cnki.1003-3726.2023.03.013

摘要

Abstract

关键词

Keywords

references