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Moisture permeability of a polymer nanocomposite containing unmodified clay

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Mechanics of Composite Materials Aims and scope

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.

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Translated from Mekhanika Kompozitnykh Materialov, Vol. 44, No. 5, pp. 723–736, September–October, 2008.

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Maksimov, R.D., Gaidukov, S., Zicans, J. et al. Moisture permeability of a polymer nanocomposite containing unmodified clay. Mech Compos Mater 44, 505–514 (2008). https://doi.org/10.1007/s11029-008-9041-x

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