Moisture absorption and hygrothermal aging of organomontmorillonite reinforced polyamide 6/polypropylene nanocomposites

W. S. Chow, Z. A. Mohd Ishak, J. Karger-Kocsis

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

A study of hygrothermal aging in terms of moisture absorption by uncompatiblized organo-montmorillonite reinforced polyamide 6/polypropylene (P A6/PP=70/30) and maleated polypropylene (MAHgPP) compatibilized P A6/PP/organoclay nanocomposites was undertaken. Hygrothermal aging was investigated by immersion of specimens in distilled water at 60°C. Tensile test was performed to study the retention-ability of the hygrothermal aged specimens. The morphology of PA6/PP nanocomposites was assessed by a scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The kinetic of water absorption of the PA6/PP nanocomposites conforms to Fickian's Law behaviours, which the initial moisture absorption follow a linear relationship between Mt and t1/2, following by saturation by immersion time. It was found that the equilibrium moisture content (Mm) and the diffusion coefficient (D) are dependent on the organo-montmorillonite loading, and MAHgPP concentration. Both the tensile modulus and strength of the PA6/PP nanocomposites deteriorated after exposed to hygrothermal aging. MAHgPP act as a good compatibilizer for PA6/PP/organomontmorillonite nanocomposites, traced to its higher retention-ability in modulus and strength (at the wet-state and upon re-drying of the specimens), lower Mm and D and reduced water permeability of the nanocomposites.

Original languageEnglish
Title of host publicationComposites Technologies For 2020
PublisherWoodhead Publishing Limited
Pages790-795
Number of pages6
ISBN (Print)9781855738317
Publication statusPublished - Jun 2004

ASJC Scopus subject areas

  • Materials Science(all)

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    Chow, W. S., Mohd Ishak, Z. A., & Karger-Kocsis, J. (2004). Moisture absorption and hygrothermal aging of organomontmorillonite reinforced polyamide 6/polypropylene nanocomposites. In Composites Technologies For 2020 (pp. 790-795). Woodhead Publishing Limited.