物理化学学报 >> 2004, Vol. 20 >> Issue (01): 47-49.doi: 10.3866/PKU.WHXB20040110

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聚ε-己内酯/聚氯乙烯球晶表面的XPS研究

邱丽美;姜勇;刘芬;赵良仲   

  1. 中国科学院化学研究所,北京　100080
  • 收稿日期:2003-06-27 修回日期:2003-09-03 发布日期:2004-01-15
  • 通讯作者: 刘芬 E-mail:xps@iccas.ac.cn

XPS Investigation of the Spherulite Surface for Poly(ε-caprolactone)/poly(vinyl chloride)

Qiu Li-Mei;Jiang Yong;Liu Fen;Zhao Liang-Zhong   

  1. Institute of Chemistry, Chinese Academy of Sciences, Beijing　100080
  • Received:2003-06-27 Revised:2003-09-03 Published:2004-01-15
  • Contact: Liu Fen E-mail:xps@iccas.ac.cn

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摘要： 聚合物薄膜在微电子领域中的应用日益增加.聚ε-己内酯/聚氯乙烯（PCL/PVC）是研究得最广泛的聚合物共混薄膜之一.PCL与PVC以一定比例混合时,可以形成环带球晶；同时,体系分为结晶PCL相及PCL/PVC非晶混溶相.用XPS和成象XPS分析技术,对PCL/PVC膜的表面化学组成和元素分布情况进行了研究.观察到PCL在薄膜表面富集.此外,成象XPS表明,PVC在球晶边界处富集,且球晶边界宽度约15 μm.

关键词: PCL/PVC, XPS, 成象XPS, 富集, 球晶边界

Abstract: Recently, polymer thin films have been increasingly used in microelectronic applications. Poly(ε-caprolactone)/poly(vinyl chloride) (PCL/PVC) blends are widely studied polymers. When PCL and PVC are blended in certain ratio, ring-banded spherulites are formed and the blends are often composed of a PCL crystal phase and a PCL/PVC amorphous phase. Optical microscopy, atomic force microscopy and angle-dependent XPS analyses were used by many scientists to investigate the morphology and composition of the PCL/PVC films. Using XPS and imaging XPS analyses, we have investigated the surface chemical composition and elemental distribution of PCL/PVC films. The results show that PCL enriches to the PCL/PVC polymer-air interface. Besides, the imaging XPS analysis indicates that PVC is concentrated at the spherulite boundaries and the width of the boundaries is about 15 μm. These observations may be valuable for the explanation of the crystallization and morphological behaviors of polymer blends.

Key words: PCL/PVC, XPS, Imaging XPS, Enrichment, Spherulite boundary