Publisher： Trans Tech Publications
E-ISSN： 1662-9752|2018|912|136-140
ISSN： 0255-5476
Source： Materials Science Forum, Vol.2018, Iss.912, 2018-02, pp. : 136-140
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Abstract
Bentonite clay was initially treated with a quaternary ammonium salt to increase its hydrophobicity, and then was dispersed in a gelatin matrix to serve as barrier to water vapor. The clays were characterized by IR spectroscopy in the infrared (FTIR), and X-ray diffraction (XRD), before and after ion exchange. The ion exchange held in the clay provokes on gelatin film a reduction of 65% in the water vapor permeability (WVP); a decrease in solubility of 55%; an increase of 35º in drop contact angle of water on the surface of the film; and 30% of raise in opacity.
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