Crystallization of a polyamide 6/Montmorillonite nanocomposite at rapid cooling

D. Mileva; A. Monami; D. Cavallo; G.C. Alfonso; G. Portale; R. Androsch

doi:10.1002/mame.201200253

Crystallization of a polyamide 6/Montmorillonite nanocomposite at rapid cooling

D. Mileva, A. Monami, D. Cavallo, G.C. Alfonso, G. Portale, R. Androsch

Polymer Technology

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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 6matrix. Presence of OMMT has negligible effect on the kinetics of formation of alpha-crystals of PA 6 at low cooling rate while there is observed enhanced nucleation of gamma-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.

Original language	English
Pages (from-to)	938-943
Number of pages	6
Journal	Macromolecular Materials and Engineering
Volume	298
Issue number	9
DOIs	https://doi.org/10.1002/mame.201200253
Publication status	Published - 2013

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title = "Crystallization of a polyamide 6/Montmorillonite nanocomposite at rapid cooling",

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 6matrix. Presence of OMMT has negligible effect on the kinetics of formation of alpha-crystals of PA 6 at low cooling rate while there is observed enhanced nucleation of gamma-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.",

author = "D. Mileva and A. Monami and D. Cavallo and G.C. Alfonso and G. Portale and R. Androsch",

year = "2013",

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T1 - Crystallization of a polyamide 6/Montmorillonite nanocomposite at rapid cooling

AU - Mileva, D.

AU - Monami, A.

AU - Cavallo, D.

AU - Alfonso, G.C.

AU - Portale, G.

AU - Androsch, R.

PY - 2013

Y1 - 2013

N2 - 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 6matrix. Presence of OMMT has negligible effect on the kinetics of formation of alpha-crystals of PA 6 at low cooling rate while there is observed enhanced nucleation of gamma-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.

AB - 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 6matrix. Presence of OMMT has negligible effect on the kinetics of formation of alpha-crystals of PA 6 at low cooling rate while there is observed enhanced nucleation of gamma-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.

U2 - 10.1002/mame.201200253

DO - 10.1002/mame.201200253

M3 - Article

VL - 298

SP - 938

EP - 943

JO - Macromolecular Materials and Engineering

JF - Macromolecular Materials and Engineering

SN - 1438-7492

IS - 9

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