The effect of Inorganic Nanoparticles on Camouflage Properties of Cotton/Polyester Fabrics

In order to make use of the reflectance behavior of woodland colors toproduce dark brown in the uv-vis-nir bands, two colored pigments wereused to print cotton/polyester (co/pet) goods. inorganic nanoparticles oftio2, zno and al2o3 were also loaded in the printing formulation. the reflectanceprofile of treated samples was studied using jasco v-670 reflectancespectrophotometer. the effect of inorganic nanoparticles on rubbing, light andwashing fastnesses as well as wettability and air permeability of printed sampleswere investigated. tuning the reflectance curve of dark brown shade wassuccessfully applied using colored pigments along with the nanoparticles. theresults indicate that the presence of tio2 and zno nanoparticles in load of 0.25-1g/kg in printing pastes made significant changes in the behavior of ir band,though only a slight change in visible reflectance of printed fabrics was found. thesamples containing nanoparticles showed great fastness levels in washing, rubbingand light fastness experiments and a considerable increase in wettability of printedfabrics. furthermore, air permeability of printed fabrics containing nanoparticleswas superior to samples printed without nanoparticles.