Abstract
ABSTRACTPhotochromic colorants change rapidly and reversibly from colorless to colored state when activated by ultraviolet radiation. They can be applied on textile substrates with use of organic binders. Different type of binders and their concentration may have a significant effect on color development and other related properties. In this work, a study of the effect of binder type at different concentrations on the color development, wash fastness and some comfort characteristics is undertaken. It was found that while these properties vary with binder type and concentration, the best color development is obtained at an optimum concentration of 5% binder. The presence of binder may affect comfort related properties of the fabrics, such as stiffness, water absorbency, air permeability, sometimes quite adversely. Hence a careful selection of the binder type is needed depending on the most important requirement in the colored fabrics.
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