Photobactericidal and photochromic textile materials realized by embedding of advantageous dye using sol-gel technology

Authors : Boris MAHLTİG, Torsten TEXTOR, Perrin AKCAKOCA KUMBASAR

Pages : 0-0

Doi:10.18466/cbujos.44647

View : 17 | Download : 7

Publication Date : 2015-12-23

Article Type : Other Papers

Abstract :The presented study reports on the application of the dye Rose Bengal on textiles to achive photobactericidal properties and spirooxazine type photochromic dye for achieving photochromic properties by using different sol-gel based coating agents. Photochromic dyes changes rapidly and reversibly from colorless form to colored state when activated by ultraviolet irradiation. Color changing technology offers unique design opportunities to the designer and also has an opportunity to obtain camouflage and UV-protective textiles. The obtained phtochromic textiles were tested by means of UPF (Ultraviolet Protection Factor) and ΔE color difference after UV irradiation.  After UV irradiation photochromic samples showed UPF values higher than 30 and this effect was developed with concentration of the dye. The prepared photobactericidal textiles were investigated by means of UV/Vis-spectroscopy, scanning electron microscopy and by testing the antimicrobial activity against the bacteria Bacillus subtilis . The purpose of this treatment was to realize photobactericidal materials which enabled antimicrobial activity while illuminated with visible light. An antimicrobial effect of the fabrics treated with Rose Bengal was observed with and without light exposition. However in case of illumination this effect was significantly stronger indicating a certain photobactericidal effect. This photobactericidal effect strongly depended on the kind of sol-gel coating agent used for embedding of the dyestuff onto the textile
Keywords : antimicrobial coating, dye, photoactive coating, sol gel method, textile