The polymorphic behavior of a polyester consisting of an aromatic triad mesogen and a flexible spacer has been investigated. The effect of thermal and mechanical treatment on the appearance of two crystalline phases stable at room temperature is discussed. The molecular packing (triclinic cell, space group P1) and the morphological parameters of the crystalline phase stabilized by drawing process are evaluated and refined. The whole-pattern method, based on the analysis of the whole x-ray diffraction pattern from fiber samples of polymer, has been employed. The molecular packing resembles very much that of polyethylene terephthalate.
|Titolo:||Molecular structure refinement of a segmented thermotropic polyester containing an aromatic triad mesogen|
|Data di pubblicazione:||1995|
|Appare nelle tipologie:||1.1.1 Articolo su rivista con DOI|