Microstructure Analysis of Nylon 66 by WAXD and SAXS

作     者：ZHANG Qing xin FU Peng peng ZHANG Hong fang MO Zhi shen 

作者机构：State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022P.R.China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究(英文版))

年 卷 期：2002年第18卷第3期

页      面：358-363页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：Supported by the Key Project of National Natural Science Foundation of China(No. 2 99340 72 ) and subsidized by theSpecial Fund for Major State Basic Research Projects(No.G19990 6 4 80 6 ) 

主　　题：Nylon 66 SAXS WAXD 

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 R g, the Porod radius R p, the thickness of crystalline region L c, the thickness of non crystalline region L a, the thickness of interphase region d tr , 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( W t,x ) should not be neglected in comparison with that of crystalline region W c,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.