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


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Abstract

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.

About the authors

A. A. Zakharov

Kazan National Research Technological University

Email: savsin@omrb.pnpi.spb.ru
Russian Federation, Kazan

Ameer Abed Jaddoa

Kazan National Research Technological University; University of Technology

Email: savsin@omrb.pnpi.spb.ru
Russian Federation, Kazan; Baghdad

T. R. Bilalov

Kazan National Research Technological University

Author for correspondence.
Email: savsin@omrb.pnpi.spb.ru
Russian Federation, Kazan

F. M. Gumerov

Kazan National Research Technological University

Email: savsin@omrb.pnpi.spb.ru
Russian Federation, Kazan

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