Investigation of changes of reflective behavior of cotton/polyester fabric by TiO2 and carbon black nanoparticles

Several pigments and vat dyes were used for investigating changes in the reflective behaviorof printed brown and khaki cotton/polyester (65/35) fabrics in vis/near ir (nir) bands. reflectance,light, rubbing, washing fastness, and colorimetric values of treated samples with tio2 nanoparticles andcarbon black powder were evaluated. the results show that nir reflectance of brown and khaki printedfabrics was reduced by presence of tio2 in printing formulations. carbon black particles significantlychange the visible appearance of the printed samples, rather than tio2 nanoparticles, even at lowconcentration.