Treatment of different types of cotton fabrics by ammonium palmitate in a supercritical CO 2 environment
| Autor: | F. M. Gumerov, T. R. Bilalov, Ameer Abed Jaddoa, B. Le Neindre, A. A. Zakharov |
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| Rok vydání: | 2017 |
| Předmět: |
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Supercritical carbon dioxide Dimethyl sulfoxide General Chemical Engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Supercritical fluid 0104 chemical sciences Contact angle chemistry.chemical_compound chemistry Chemical engineering Acetone Organic chemistry Ammonium Physical and Theoretical Chemistry Solubility 0210 nano-technology |
| Zdroj: | The Journal of Supercritical Fluids. 130:47-55 |
| ISSN: | 0896-8446 |
| DOI: | 10.1016/j.supflu.2017.07.036 |
| Popis: | Experimental results are reported on the solubility of ammonium palmitate, which is one of potential fabric water-repellent agent, in pure supercritical carbon dioxide (SC-CO 2 ) and (SC-CO 2 ) modified by acetone and dimethyl sulfoxide. The measurements were performed at temperatures from 308.15 K to 333.15 K, in the pressure range from 10.0 to 32.5 MPa, on an experimental installation using a dynamic search method. Experimental solubility data are described using the Peng-Robinson equation. The results of the treatment of various types of cotton fabrics by ammonium palmitate in supercritical CO 2 environment are presented. The main goal of the treatment was to make cotton fabrics water repellent. The water contact angle (WCA), of the hydrothermally treated samples was determined and the increase in their hydrophobicity was found to be in the ultrahydrophobic (WCA > 120°) and superhydrophobic (WCA > 150°) categories. |
| Databáze: | OpenAIRE |
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