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Treatment of Cotton Fabrics by Ammonium Palmitate in a Supercritical CO2 Medium


Experimental results on the solubility of ammonium palmitate as a potential fabric water-repellent agent in supercritical carbon dioxide (SC-CO2)—pure and modified with acetone and dimethyl sulfoxide—are presented. The measurements are performed at temperatures 318.2 and 328.2 K in the pressure range from 10.0 to 32.5 MPa in a dynamic regime. The experimental solubility data are described using the Peng–Robinson equation of state. The results of treatment of various types of cotton fabrics by ammonium palmitate in SC-CO2 are presented. The contact (wetting) angle of the treated samples is determined and the increase in their hydrophobicity is demonstrated.

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Correspondence to T. R. Bilalov.

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Original Russian Text © A.A. Zakharov, Ameer Abed Jaddoa, T.R. Bilalov, F.M. Gumerov, 2016, published in Sverkhkriticheskie Flyuidy. Teoriya i Praktika, 2016, Vol. 11, No. 2, pp. 39–52.

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Zakharov, A.A., Jaddoa, A.A., Bilalov, T.R. et al. Treatment of Cotton Fabrics by Ammonium Palmitate in a Supercritical CO2 Medium. Russ. J. Phys. Chem. B 11, 1078–1088 (2017).

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  • ammonium palmitate
  • supercritical carbon dioxide
  • solubility
  • cotton fabric
  • impregnation
  • wetting angle
  • hydrophobicity