Bactericidal action of cost-effective colorimetric acid-base sensor of dyed cotton-based fabrics as a promising wound dressing mat

Acid-base sensitive fabrics is considered as one of interesting features for smart textile applications; therefore, this work presents a simple treatment of cotton fabric with 3-Chloro-2-hydroxypropyltrimethylammonium chloride (CHPTAC) followed by dyeing with curcumin dye. On the contrary, the dyed cationized cotton fabric exhibited a rough surface owing to the curcumin dye adsorption onto the surface of cationized cotton fabric. The interesting acid-base sensitivity of the dyed (dyed cationized cotton) fabric was observed and the color of dyed cationized cotton was changed from brownish yellow color to bright yellow color in acidic pH up to 6 while by increase the pH than 8 the color changed from brownish yellow to reddish brown color. The color change can easily be observed by naked eye. It was found that, dyed cationized cotton fabric exhibit the highest bactericidal activity compared with the undyed cationized cotton fabric, and untreated cotton fabric, which possessed the lowest antibacterial effect. The results show that a more serious case for dyeing cotton fabric leads to bacterial cell membrane permeability than untreated cotton fabric or a control group. Furthermore, the research showed that untreated, cationized and dyed/cationized cotton fabrics are unaffected by negative reactions. The dyeing process increased the functional performance of cotton fabric, as they have better anti-adhering capability. This technique can be tailored for biomedical especially with wound dressing, which designed to prevent the biofilm formation. Results obtained in this work recommend that dyed cationized cotton fabric with curcumin is an excellent pH sensitive for wound dressing material that can prevent the bacterial infection and control of biofilm adhesion.