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高等学校化学研究 ›› 2002, Vol. 18 ›› Issue (3): 358-363.

• Articles • 上一篇    下一篇

Microstructure Analysis of Nylon 66 by WAXD and SAXS

ZHANG Qing-xin, FU Peng-peng, ZHANG Hong-fang, MO Zhi-shen   

  1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
  • 收稿日期:2001-04-04 出版日期:2002-08-24 发布日期:2011-08-04
  • 基金资助:

    Supported by the Key Project of National Natural Science Foundation of China(No.29934072) and subsidized by the Special Fund for Major State Basic Research Projects(No.G1999064806).

Microstructure Analysis of Nylon 66 by WAXD and SAXS

ZHANG Qing-xin, FU Peng-peng, ZHANG Hong-fang, MO Zhi-shen   

  1. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
  • Received:2001-04-04 Online:2002-08-24 Published:2011-08-04
  • Supported by:

    Supported by the Key Project of National Natural Science Foundation of China(No.29934072) and subsidized by the Special Fund for Major State Basic Research Projects(No.G1999064806).

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被引次数

2

摘要： The analysis of the small angle X-ray scattering(SAXS) data was based upon particle characteristic function, one-dimensional electron-density correlation function and particle distribution function. The microstructure of nylon 66 with different degrees of crystallinity was studied by means of X-ray scattering method. The radius of gyration Rg, the Porod radius Rp, the thickness of crystalline region Lc, the thickness of non-crystalline region La, the thickness of interphase region dtr, the long period L, the semiaxises of particles(a, a, b), the distribution of the particle sizes and the scattering invariant were calculated. The results indicate that there was a significant interphase region between the crystalline region and the non-crystalline region, and its content(Wt,x) should not be neglected in comparison with that of crystalline region Wc,x. The morphology of nylon 66 prepared by isothermal crystallization at a high temperature was mainly a lamellar structure, while the spherical crystals dominated in the quenched sample. The size of the particles in the quenched sample was smaller than that of those in the isothermally crystallized sample, and the distribution of the particle sizes in the isothermally crystallized sample was wider.

关键词: Nylon 66, SAXS, WAXD

Abstract: The analysis of the small angle X-ray scattering(SAXS) data was based upon particle characteristic function, one-dimensional electron-density correlation function and particle distribution function. The microstructure of nylon 66 with different degrees of crystallinity was studied by means of X-ray scattering method. The radius of gyration Rg, the Porod radius Rp, the thickness of crystalline region Lc, the thickness of non-crystalline region La, the thickness of interphase region dtr, the long period L, the semiaxises of particles(a, a, b), the distribution of the particle sizes and the scattering invariant were calculated. The results indicate that there was a significant interphase region between the crystalline region and the non-crystalline region, and its content(Wt,x) should not be neglected in comparison with that of crystalline region Wc,x. The morphology of nylon 66 prepared by isothermal crystallization at a high temperature was mainly a lamellar structure, while the spherical crystals dominated in the quenched sample. The size of the particles in the quenched sample was smaller than that of those in the isothermally crystallized sample, and the distribution of the particle sizes in the isothermally crystallized sample was wider.

Key words: Nylon 66, SAXS, WAXD