The influence of supported β-nucleating agent on isothermal crystallization behavior and melting characteristics of polypropylene random copolymer

LI Mei; ZHANG Zishou; MAI Kancheng

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The influence of supported β-nucleating agent on isothermal crystallization behavior and melting characteristics of polypropylene random copolymer

更新时间：2023-12-11

- The influence of supported β-nucleating agent on isothermal crystallization behavior and melting characteristics of polypropylene random copolymer
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 56, Issue 6, Pages: 111-115(2017)
- 作者机构：
  
  1. 广东轻工职业技术学院∥广东高校高分子材料加工工程技术开发中心∥广东省高分子材料先进加工工程技术研究中心,广东,广州,510300
  2. 
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2017，
  
  Published Online：25 November 2017，
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LI Mei, ZHANG Zishou, MAI Kancheng. The influence of supported β-nucleating agent on isothermal crystallization behavior and melting characteristics of polypropylene random copolymer. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 56(6):111-115(2017)
DOI：

LI Mei, ZHANG Zishou, MAI Kancheng. The influence of supported β-nucleating agent on isothermal crystallization behavior and melting characteristics of polypropylene random copolymer. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 56(6):111-115(2017) DOI：

摘要

采用负载型β-成核剂制备了β-成核无规共聚聚丙烯（β-PPR），通过差示扫描量热法（DSC）对比研究了纯PPR和β-PPR等温结晶行为和熔融特性，采用Avrami方法描述了PPR和β-PPR等温结晶动力学，结果表明负载型β-成核剂加入明显提高PPR结晶速率，缩短结晶时间；且等温结晶行为受结晶温度影响小，主要形成β-晶，在低温等温结晶，有利于β-PPR形成。

Abstract

PPR were prepared with supported β-nucleating agent in this paper

the isothermal crystallization behavior and melting characteristics of PPR and β-PPR were studied with Differential Scanning Calorimeter (DSC). The isothermal crystallization kinetics of PPR and β-PPR were examined by Avrami model. It is indicated that the addition of supported β-nucleating agent improve the crystallization rate of PPR apparently and shorten the half crystallization time. Furthermore

the isothermal crystallization behavior of β-PPR depend little on the crystallization temperature and it mainly formed β-crystal. It is apt to form β-crystal for PPR when crystallization at low temperature.

关键词

无规共聚聚丙烯&beta-成核剂等温结晶动力学

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