Papers by Author: Małgorzata Rabiej

Abstract: The most important structural parameters of semicrystalline polymers can be determined by modeling of their structure and best fitting of a theoretical intensity distribution calculated for the assumed model to the experimental SAXS curve. This paper presents a module of a computer program SAXSDAT dedicated to such calculations.

Abstract: Most frequently, the degree of crystallinity of polymers is determined using Wide Angle X-ray Diffraction (WAXD) technique. The method consists in the resolution of WAXD diffraction curve of a polymer into individual crystalline peaks and amorphous halo. This work presents a procedure, which was elaborated to help in a quick determination of the angular positions of crystalline peaks present in the diffraction curve of investigated polymer. The positions of peaks are determined using numerical differentiation. Using these data the computer program WAXSFIT identifies investigated polymer and prepares a set of starting parameters which are used in the calculations of the degree of crystallinity.

Abstract: This work shortly describes the morphology of polymers and presents the possibilities of SAXS method in the investigations of the structure of polymers referring to our studies on the structure of homogeneous copolymers ethylene-1-octene. Besides, we describe our computer program SAXSDAT designed for the analysis of SAXS curves of polymers.