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Crystallization of a Polyamide 6/Montmorillonite Nanocomposite at Rapid Cooling

Identifieur interne : 000364 ( Main/Exploration ); précédent : 000363; suivant : 000365

Crystallization of a Polyamide 6/Montmorillonite Nanocomposite at Rapid Cooling

Auteurs : Daniela Mileva [Allemagne, Autriche] ; Andrea Monami [Allemagne] ; Dario Cavallo [Pays-Bas] ; Giovanni C. Alfonso [Italie] ; Giuseppe Portale [France] ; René Androsch [Allemagne]

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Mots-clés :

Abstract

The crystallization behavior of a polyamide 6/organo‐modified montmorillonite (PA 6/OMMT) nanocomposite has been investigated by scanning chip calorimetry and wide‐angle X‐ray scattering, with emphasis placed on the evaluation of the effect of supercooling/cooling rate on the crystal/mesophase polymorphism of the PA 6 matrix. Presence of OMMT has negligible effect on the kinetics of formation of α‐crystals of PA 6 at low cooling rate while there is observed enhanced nucleation of γ‐mesophase on fast cooling. Furthermore, addition of OMMT leads to a distinct increase of the cooling rate required to completely vitrify the amorphous state. The performed experiments demonstrate that the nucleating effect of OMMT in PA 6/OMMT nanocomposites is of particular importance at cooling conditions relevant in polymer processing.


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DOI: 10.1002/mame.201200253


Affiliations:


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