Evaluation of color strength (K/S) values of cotton fabrics dyed with reactive dye and treated with silver nanoparticles

Abstract

The present study covers the evaluation of color strength and color values of cotton fabrics dyed with Coralite blue FL-R reactive dye and treated with silver nanopartricles using spectrophotometer. The characterized silver nano particles are applied along with flurotriazine based reactive dyes (Coralite Blue FL-R) by exhaust dyeing method on cotton fabrics. The concentrations of silver nanoparticles were standardized for different ppm levels as per the silver nano material supplier’s standards. The dye bath was set with sodium carbonate (Na2 Co3) (20 gpl concentration) and sodium chloride (NaCL) (20gpl). Temperature and rate of dyeing was monitored at 80°C. The dyed fabric was soaped and washed after dyeing. Evaluation of the reactive dyed fabrics and their characterization studies showed the presence of silver nano-particles embedded on the substrate strongly. However, Silver nano-particles (AGNPs) when coupled with reactive dyes enhanced the overall fastness property of the fabrics. The color strength (K/S) values of AGNP treated fabrics were compared with untreated sample showing change in the reflective values and K/S values. In conclusion the color analysis of cotton fabrics dyed with coralite blue FL-R and treated with silver nanoparticles show difference in their color values when silver nano particle concentrations are varied.