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Influence of the relative amounts of crystalline and amorphous phases on the mechanical properties of polyamide‐6 nanocomposites
Author(s) -
Gargalaka João,
Couto Ricardo A. A.,
Constantino Vera R. L.,
Toma Henrique E.,
Araki Koiti
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.36509
Subject(s) - nanocomposite , polyamide , materials science , amorphous solid , organoclay , crystallization , composite material , polymer , compounding , diffraction , chemical engineering , chemistry , organic chemistry , optics , engineering , physics
The relative amounts of amorphous and crystalline γ‐ and α‐phases in polyamide‐6 nanocomposites, estimated from the deconvolution of X‐ray diffraction peaks using Gaussian functions, correlates with their mechanical, thermomechanical, and barrier properties. The incorporation of organoclay platelets (Cloisite 15A and 30B) induced the crystallization of the polymer in the γ form at expense of the amorphous phase, such that 1–2 wt % of Cloisite is enough to enhance the mechanical and the thermomechanical properties. However, higher nanofiller loads were necessary to achieve good barrier effects, because this property is mainly dependent on the tortuous path permeation mechanism of the gas molecules through the nanocomposite films. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012