TIT# SAXS Study on the Crystallization of PET under Physical Confinement in
     PET/PC Multilayered Films
AUT# Puente Orench, Ines; Stribeck, Norbert; Ania, Fernando; Baer, Eric;
     Hiltner, Anne; Baltá Calleja, Francisco José
SOU# Polymer (2009), ~, accepted
LOC# xv122
CLA#
COM#
APP#
MAT#
ABS# The present work is concerned with the study of the development of the
     crystalline structure of poly(ethylene terephthalate) in multilayered
     films of poly(ethylene terephthalate)/polycarbonate (PET/PC) prepared
     by means of layer multiplying coextrusion. Small-angle X-ray scattering
     patterns were recorded during isothermal crystallization experiments and
     evaluated by means of Ruland's interface distribution function. Thus,
     structural parameters describing the thickness distribution of crystalline
     and amorphous layers were determined. It is shown that the crystallization
     of PET is delayed with increasing confinement. However, when the
     crystallization process comes to an end, the values of the nanostructural
     parameters of the lamellar system are nearly the same for the confined
     and the non-confined PET.