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Sonoloading of nano-TiO2 on sono-alkali hydrolyzed polyester fabric
- Hashemizad, Shiva, Montazer, Majid, Mireshghi, Seyed Saeed
- The journal of the Textile Institute 2017 v.108 no.1 pp. 117-122
- Escherichia coli, alkaline hydrolysis, antibacterial properties, bacteria, discoloration, fabrics, irradiation, methylene blue, nanoparticles, polyesters, scanning electron microscopy, solar radiation, titanium dioxide
- This study presents alkali hydrolysis of polyester fabric surfaces in an ultrasound bath allowing the loading of nano-TiO ₂ by wet chemical technique. The loaded fabrics showed a significant photo-activity under day light irradiation in normal conditions which discolored persistent stains of methylene blue as a cationic dye. The discoloration of stain on the fabric loaded with TiO ₂ was monitored quantitatively to define the effect of hydrolysis as a surface pre-treatment on the photo-activity of finished fabrics. The SEM images confirmed more TiO ₂ nanoparticles entrapped in the voids created by the alkali hydrolysis of the fabrics. All nano-treated samples showed acceptable antibacterial properties against pathogenic micro-organisms including E. coli (Gram-negative) and S. aureus (Gram-positive) as the rate of bacteria growth inhabitation was higher for sono-alkali hydrolyzed samples rather than the others.