Moisture permeability of a polymer nanocomposite containing unmodified clay
Results of an investigation into the kinetics of moisture sorption by an unfilled styrene-acrylate copolymer and a nanocomposite containing unmodified montmorillonite clay are reported. The sorption tests were performed at 25°C and different levels of the relative humidity of air up to 80%. The mois...
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Veröffentlicht in: | Mechanics of composite materials 2008-09, Vol.44 (5), p.505-514 |
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description | Results of an investigation into the kinetics of moisture sorption by an unfilled styrene-acrylate copolymer and a nanocomposite containing unmodified montmorillonite clay are reported. The sorption tests were performed at 25°C and different levels of the relative humidity of air up to 80%. The moisture diffusivity was calculated using Fick's equation for one-dimensional diffusion. Data on the influence of montmorillonite concentration on the coefficients of diffusion, solubility, and permeability are obtained. The experimental values of the permeability coefficient are compared with those calculated by using a model taking into account the increased path of a diffusing water molecule caused by the shielding effect of plate like filler particles. |
doi_str_mv | 10.1007/s11029-008-9041-x |
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subjects | Ceramics Characterization and Evaluation of Materials Chemistry and Materials Science Classical Mechanics Composites Glass Materials Science Natural Materials Solid Mechanics |
title | Moisture permeability of a polymer nanocomposite containing unmodified clay |
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