The antimicrobial property of plain-knit and rib-knit Tencel fabrics has been analyzed using Taguchi L9 experimental design. The antimicrobial treatment was carried out using surface-modified Chitosan treatment through pad-dry technique. The process parameters, such as yarn count, loop length of knitted fabric, and Chitosan concentration, were independent variables. The antimicrobial characterization was done as per SN 195920. It was found that yarn count and loop length significantly impact the zone of inhibition against Escherichia coli and Staphylococcus aureus. The Chitosan concentration has not influenced the antimicrobial activity of the fabric. The regression models were developed and optimized process parameters were verified through the regression model. Scanning electron microscopy and Fourier transform infrared spectroscopy analysis have also been done to execute the confirmation of coating effectiveness. In addition, contour graph analysis has been done to understand the influencing pattern of process parameters on response.
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