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.
|Title of host publication||Composites Technologies For 2020|
|Publisher||Woodhead Publishing Limited|
|Number of pages||6|
|Publication status||Published - Jun 2004|
ASJC Scopus subject areas
- Materials Science(all)