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Crystallization kinetics of polymer fibrous nanocomposites

Type
Articles dans des revues avec comité de lecture
Author
GALESKI, Stanislaw
548219 Laboratory for Solid State Physics [ETH Zürich]
PIÓRKOWSKA, Ewa
489953 Polish Academy of Sciences [PAN]
ROZANSKI, Artur
303306 Polska Akademia Nauk = Polish Academy of Sciences [PAN]
REGNIER, Gilles
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
GALESKI, Andrzej
489953 Polish Academy of Sciences [PAN]
JURCZUK, Kinga
489953 Polish Academy of Sciences [PAN]

URI
http://hdl.handle.net/10985/16784
DOI
10.1016/j.eurpolymj.2016.08.002
Date
2016
Journal
European Polymer Journal

Abstract

Through applying both a probabilistic approach and a combination of probabilistic and the Avrami ‘extended volume’ approaches we have derived a theory of overall crystallization kinetics of polymers reinforced with nanofibers. The theory describes the crystallization kinetics in the presence of straight or curved nanofibers, with different nucleation ability and orientation, and allows to account for their variable length. The analytic results are supported by computer simulations of spherulitic structures. The derived mathematical formulas are in exponential forms suggesting the use of the Avrami logarithmic coordinates for detailed analysis of experimental data. Experimental data on crystallization of several nanocomposites, including polypropylene reinforced with poly(tetrafluoroethylene) nanofibers and polyamide 12 with carbon nanotubes, are in a good agreement with the theoretical predictions.

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