Abstract
A pigment was prepared by enwrapping TiO2 with dyes. Surface silane modification of pigment was performed after adsorption of dyes onto TiO2 for immobilisation of dyes onto TiO2 and fixation of pigments onto cellulose materials. The colouration of cellulose fabric was obtained through fixation of pigments. The decolouration of cellulose fabric was achieved via photocatalytic decomposition of dyes on TiO2 under UV irradiation. The morphology of coloured cellulose material was observed. The fixation of dyes onto the pigment and immobilisation of pigments onto the fabric were improved with silane agent amount and increasing silane coupling time. Better decolouration of cellulose fabrics could be obtained at a larger silane agent amount and a proper coupling time. The physical properties of pigment dyed fabrics were relatively improved after silane modification.
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