 |
 |
Article dans une revue
Crystallization of polypropylene at high cooling rates: Microscopic and calorimetric studies
Abstract : The use of three different calorimeters made it possible to measure the overall kinetics of isotactic polypropylene in the α-phase in a wide temperature range. Original results concerning the growth rate of α spherulites were also obtained by optical microscopy by using a prototype hot stage developed in our laboratory. A new growth regime seems to exist at low crystallization temperature. The number of nuclei shows a smooth evolution with temperature with no rupture in the nucleation behavior in the low-temperature range. Combination of experimental results and an appropriate extrapolation procedure lead to an overall kinetics law valid in the whole domain of existence of the α-phase. This law is based on Ozawa's formalism. It will be used in polymer processing.
https://hal-mines-paristech.archives-ouvertes.fr/hal-00682771
Contributeur : Magalie Prudon <>
Soumis le : lundi 26 mars 2012 - 17:24:49
Dernière modification le : mardi 4 août 2020 - 08:18:25
Contributeur : Magalie Prudon <>
Soumis le : lundi 26 mars 2012 - 17:24:49
Dernière modification le : mardi 4 août 2020 - 08:18:25
Lien texte intégral
