Type:
Journal
Description:
The nanostructural changes associated to the multiple melting behaviour of isotropic cold-crystallized poly(ethylene terephthalate) (PET) have been investigated by means of simultaneous wide- and small-angle X-ray scattering, using a synchrotron radiation source. Variations in the degree of crystallinity, coherent lateral crystal size and long period values, as a function of temperature, for two different heating rates are reported for cold-crystallized samples in the 100–190 °C range. The Interface Distribution Function analysis is also employed to provide the crystalline and amorphous layer thickness values at various temperatures of interest. Results suggest that samples crystallized at both low (Ta = 100–120 °C) and high (Ta = 160–190 °C) temperatures are subjected to a nearly continuous nanostructural reorganization process upon heating, starting immediately above Tg (≈80 °C) and giving rise to complete …
Publisher:
Elsevier
Publication date:
18 Feb 2008
Biblio References:
Volume: 49 Issue: 4 Pages: 965-973
Origin:
Polymer