Superhydrophobic coatings on textiles based on novel poly(perfluoro-tert-hexylbutyl methacrylate-co-hydroxyethyl methacrylate) copolymer deposited from solutions in supercritical carbon dioxide
| Autor: | Mikhail S. Kondratenko, I. V. Elmanovich, Inesa V. Blagodatskikh, Marat O. Gallyamov, V. V. Zefirov, A. I. Stakhanov, A. A. Tyutyunov, P. S. Kazaryan, Alexey R. Khokhlov |
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| Rok vydání: | 2019 |
| Předmět: |
Supercritical carbon dioxide
Materials science General Chemical Engineering Radical polymerization Azobisisobutyronitrile 02 engineering and technology (Hydroxyethyl)methacrylate 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Methacrylate 01 natural sciences 0104 chemical sciences Polyester chemistry.chemical_compound Monomer chemistry Chemical engineering Copolymer Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | The Journal of Supercritical Fluids. 149:34-41 |
| ISSN: | 0896-8446 |
| DOI: | 10.1016/j.supflu.2019.03.018 |
| Popis: | A novel 6,6,7,7,8,8,8-Heptafluoro-5,5-bis(trifluoromethyl)octyl methacrylate monomer is synthesized. Corresponding homopolymers and copolymers with hydroxyethyl methacrylate are obtained by means of radical polymerization in supercritical carbon dioxide using azobisisobutyronitrile as an initiator. The resulting homopolymers are highly soluble in supercritical carbon dioxide. Solubility of copolymers is decreased with increase in hydroxyethyl methacrylate content. Simultaneous deposition of copolymers with diisocyanate crosslinking agents from supercritical carbon dioxide solutions allows one to obtain uniform coating of individual fibers of cotton/polyester fabrics. Such coatings show higher water contact angles and delayed transition from Cassie-Baxter to Wenzel state during droplet evaporation than 6,6,7,7,8,8,8-Heptafluoro-5,5-bis(trifluoromethyl)octyl methacrylate or perfluorohexylethyl methacrylate homopolymer coatings. |
| Databáze: | OpenAIRE |
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