Photoinduced hydrophilicity and self-cleaning characteristics of silicone-modified soya alkyd/TiO2 nanocomposite coating
| Autor: | Sushil S. Pawar, Sangram K. Rath, R. Baloji Naik, Tapan Kumar Mahato, Balasubramanian Kandasubramanian |
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| Rok vydání: | 2019 |
| Předmět: |
Thermogravimetric analysis
Materials science 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Contact angle chemistry.chemical_compound Colloid and Surface Chemistry Silicone Coating Fourier transform infrared spectroscopy Nanocomposite Alkyd Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Chemical engineering chemistry visual_art engineering Photocatalysis visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Journal of Coatings Technology and Research. 17:719-730 |
| ISSN: | 1935-3804 1547-0091 |
| DOI: | 10.1007/s11998-019-00253-y |
| Popis: | Nano-TiO2-dispersed polymeric coatings have been extensively studied in recent years owing to their photocatalytic-induced self-cleaning characteristics. However, durability and long-term retention of self-cleaning performance of such coatings remain a challenge for practical applications. In the present work, we report the self-cleaning properties of nano-TiO2/silicone soya alkyd-based coating formulations comprising 0.5–5 wt% of nanofiller as well as conventional additives of rutile TiO2 and BaSO4. The nanocomposites were prepared by an in situ process involving dispersion of nano-TiO2 in soya oil, soya alkyd synthesis by alcoholic process, followed by silicone modification. The coatings prepared from the nanofiller-dispersed resin showed significant UV radiation-induced hydrophilicity and photocatalytic degradation of methylene blue (MB) solution. A coating formulation with 2 wt% of nano-TiO2 loading showed a decrease in water contact angle from 87° to |
| Databáze: | OpenAIRE |
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