中国塑料 ›› 2008, Vol. 22 ›› Issue (11): 15-18 .DOI: 10.19491/j.issn.1001-9278.2008.11.003

• 材料与性能 • 上一篇    下一篇

聚己内酯的非等温结晶动力学的研究

崔广军,王扬,李海东   

  1. 1.长春工业大学化学工程学院,吉林 长春130012; 2.长春应用化学研究所高分子物理与化学国家重点实验室,吉林 长春 130022
  • 收稿日期:2008-01-01 修回日期:1900-01-01 出版日期:2008-11-26 发布日期:2008-11-26

Nonisothermal Crystallization Behavior of Poly(ε-caprolatone)

CUI Guang-jun ,WANG Yang , LI Hai-dong   

  1. 1. Chemical Engineering Department,Changchun University of Technology ,Changchun 130012,China; 2. State Key Laboratory of Polymer Physics and Chemisry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022,China
  • Received:2008-01-01 Revised:1900-01-01 Online:2008-11-26 Published:2008-11-26
  • Contact: LI Hai-dong

摘要: 采用差示扫描量热仪和X射线衍射仪研究了聚己内酯(PCL)的非等温结晶行为,并采用Ozawa方程、Jeziorny方程分析了PCL的非等温结晶动力学,结果表明,在PCL结晶初期,Avrami指数n≈4 ,从而表明了PCL以均相成核的三维球晶方式生长,同时发现在PCL的结晶后期即相对结晶度为98 %时存在着缓慢的次级结晶,表明次级结晶的出现是过冷度的影响。

关键词: 聚己内酯, 非等温结晶动力学, 次级结晶, Ozawa方程, Jeziorny方程

Abstract: The nonisothermal crystallization behavior of poly(ε-caprolactone) was studied by DSC and XRD, the crystallization kinetics was analyzed using Ozawa and Jeziorny equations. The obtained Avrami index n is about 4, which demonstrates a three-dimensional spherulite growth on homogengous nuclei. Secondary crystallization process was observed when the relative crystallinity was 98 %, which was affected by the degree of supercooling.

Key words: poly(ε-caprolactone), nonisothermal crystallization kinetics, secondary crystallization, Ozawa equation, Jeziorny equation