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›› 2005, Vol. 22 ›› Issue (2): 135-139.DOI: 10.7523/j.issn.2095-6134.2005.2.002

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Small Angle X-ray Scattering Study on Long Periods of Polypropylene Three-phase Structure

LIU Kai-Yuan1, ZHAO Hui LI Zhi-Hong1, 2, DONG Bao-Zhong2   

  1. 1. Department of Physics, Anshan Normal College, Anshan 114005, China;
    2. Synchrotron Radiation Laboratory, Institute of High Energy Ph ysics, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2004-02-23 Revised:2004-06-02 Online:2005-03-15

Abstract:

In the paper, small angle X-ray scattering technique was used to study long periods of polypropylene.The results indicate that the correlation function long period of polypropylene and its Bragg long period are not identical. We applied the theory of small-angle scattering and three-phase model of crystalline polymer to study the reason of differences of two kinds of long periods of polypropylene and draw a conclusion that the Bragg long period approaches the correlation function long period plus the thickness of the transition layer. The conclusion is consistentwith our small-angle scattering experimental results.

Key words: small-angle X-ray scattering, polypropylene, three-phase structure, correlation function

CLC Number: