Experimental Teaching Design of Isothermal Crystallization of Polypropylene ———To Make Students Understand the Crystallization Process of Polymers More Fully and Deeply

Jie LIU; De-an SHI; Guo-cheng WANG; Wei-wei LEI

doi:10.14028/j.cnki.1003-3726.2022.09.009

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Experimental Teaching Design of Isothermal Crystallization of Polypropylene ———To Make Students Understand the Crystallization Process of Polymers More Fully and Deeply

更新时间：2022-09-09

- Experimental Teaching Design of Isothermal Crystallization of Polypropylene ———To Make Students Understand the Crystallization Process of Polymers More Fully and Deeply
- Polymer Bulletin Vol. 35, Issue 9, Pages: 66-73(2022)
- 作者机构：
  
  湖北大学材料科学与工程学院功能材料绿色制备与应用教育部重点实验室,武汉 430062
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2022.09.009
  CLC：
- Published：20 September 2022，
  
  Received：28 September 2021，
  
  Revised：15 March 2022，
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Jie LIU, De-an SHI, Guo-cheng WANG, Wei-wei LEI. Experimental Teaching Design of Isothermal Crystallization of Polypropylene ———To Make Students Understand the Crystallization Process of Polymers More Fully and Deeply. [J]. Polymer Bulletin 35(9):66-73(2022)
DOI：

Jie LIU, De-an SHI, Guo-cheng WANG, Wei-wei LEI. Experimental Teaching Design of Isothermal Crystallization of Polypropylene ———To Make Students Understand the Crystallization Process of Polymers More Fully and Deeply. [J]. Polymer Bulletin 35(9):66-73(2022) DOI： 10.14028/j.cnki.1003-3726.2022.09.009.

摘要

聚丙烯等温结晶实验是《高分子物理实验》教学中的一个重要项目。针对本科生在学习“偏光显微镜法观察聚丙烯球晶生长过程”中对实验结果可能存在的认识误区

笔者通过引导学生将差示扫描量热法所得到的聚丙烯等温结晶全过程与偏光显微镜实验结果进行比较

进一步帮助学生充分理解球晶生长不同阶段结晶速率差异及内在原因

使学生对聚合物结晶过程有更加全面深刻的认识

做到理论和实验的有机结合。

Abstract

The isothermal crystallization experiment of polypropylene is an important item in the teaching of

Polymer Physics Experiment

. In view of the students' misunderstanding of the experimental results in the course of "observing the growth process of polypropylene spherulites by polarized light microscopy method"

the authors further help students fully understand the differences of crystallization rate in different stages of spherulite growth and the underlying causes by guiding the students to compare the isothermal crystallization process of polypropylene obtained by differential scanning calorimetry with the results of polarized light microscopy experiments. The aim is to enable students to have a more comprehensive and profound understanding of the polymer crystallization process

and to achieve the organic combination of theory and experiment.

关键词

聚合物结晶实验教学偏光显微镜差示扫描量热法

Keywords

Polymer crystallizationExperimental teachingPolarized light microscopyDifferential scanning calorimetry

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