高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (12): 2379.

• 研究简报 • 上一篇    下一篇

聚对苯二甲酸1,3-丙二醇酯溶液浇铸薄膜形态结构

何兴权1,2, 杨德才1, 谢德民2   

  1. 1. 中国科学院长春应用化学研究所, 高分子物理与化学国家重点实验室, 长春130022;
    2. 东北师范大学化学学院, 长春130024
  • 收稿日期:2004-03-17 出版日期:2004-12-24 发布日期:2004-12-24
  • 基金资助:

    国家自然科学基金(批准号:20234020)资助

Morphological Structure of Solution-cast Poly(trimethylene terephthalate) Thin Film

HE Xing-Quan1,2, YANG De-Cai1, XIE De-Min2   

  1. 1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2. Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
  • Received:2004-03-17 Online:2004-12-24 Published:2004-12-24

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被引次数

4

关键词: 聚对苯二甲酸1, 3-丙二醇酯, 形态结构, 环带球晶

Abstract: The morphological structure of poly(trimethylene terephthalate)(PTT) thin films solution-cast at various temperatures was investigated by using polarized light microscopy and atomic force microscopy techniques. Different morphologies of the PTT films were observed at different crystallization temperatures (Tc). In the temperature range of 363-403 K, banded spherulites occurred. When Tc=413 K, the center location of the spherulite showed banded structure, while the outer region of the spherulite displayed a spherulite structure without ring-band. When Tc≥423 K, the normal non-banded spherulite was found. The main reason for producing the ring-banded spherulite is the effect of residual solvent during the crystallization processs of the solution-cast films. At higher crystallization temperatures(≥423 K), no residual solvent exists during the crystallization of the films since the evaporation rate is higher at higher temperatures. So no banded structure is formed.

Key words: Poly(trimethylene terephthalate), Morphological structure, Ring-banded spherulite

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