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Title of Journal: J Polym Res

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Abbravation: Journal of Polymer Research

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Springer Netherlands

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DOI

10.1016/j.annder.2015.10.345

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ISSN

1572-8935

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A novel approach to study the isothermal and noni

Authors: K Ben Hafsia M Ponçot D Chapron I Royaud A Dahoun P Bourson
Publish Date: 2016/04/14
Volume: 23, Issue: 5, Pages: 93-
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Abstract

This paper focuses on the study of the crystallization kinetics of an initially quasiamorphous PolyEthylene Terephthalate PET during controlled heating treatments using Raman Spectroscopy Characteristic vibrational bands of both crystalline and amorphous phases are then investigated in terms of wavenumber values full widths at half maximum and integrated intensities variations which led to the establishment of a more accurate crystallinity ratio criterion than the one obtained by standard differential scanning calorimetry DSC analysis too much dependent on the low polymer thermal conductivity Applying this last criterion isothermal and nonisothermal crystallization kinetics were investigated following the Avrami’s and Ozawa’s theories in order to identify the germination and growth modes of the triclinic crystals of PET as a function of thermal treatment Moreover all the specific microstructural transitions such as cold crystallization crystallization from the melt melting and glass transition are detected and characterized Similar thermal behaviors were obtained from Raman results and conventional differential scanning calorimetry measurements

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