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Structural Aspects of Poly(thiodiethylene terephthalate) Investigated by X‐Ray Powder Diffraction
Author(s) -
Fichera Anna Maria,
Finelli Lara,
Gazzano Massimo,
Lotti Nadia,
Malta Viscardo,
Munari Andrea
Publication year - 2004
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200400143
Subject(s) - microcrystalline , crystallite , materials science , diffraction , phase (matter) , crystallography , amorphous solid , chain (unit) , polymer , powder diffraction , crystal structure , projection (relational algebra) , x ray crystallography , crystal (programming language) , optics , composite material , chemistry , physics , organic chemistry , mathematics , programming language , algorithm , astronomy , computer science
Summary: The full‐profile refinement of X‐ray diffraction patterns was used to investigate two poly(thiodiethylene terephthalate) (PSDET) samples with different thermal history in order to thoroughly analyze their polymorphic aspects. In each sample, a crystalline ( α or β ) and a microcrystalline ( α ′ or β ′) phase were identified together with an amorphous component. The crystal structures of all the ordered phases were determined. The data indicated an appreciable difference between the two crystalline forms, while the microcrystalline were rather similar. The results reported in this paper agree with the hypothesis that the polymorphic and morphological aspects of PSDET have to be correlated with the order degree and reorganization of crystallites and microcrystallites.Projection along the a axis and c axis of α ‐phase chain arrangement.