In this study we have investigated the mordanting effect of natural mordants such as camellia ash, bean chaff ash and iron plasma on silk fabrics dyed with green tea extracts. Experimental variables include ultraviolet shielding effect, light fastness, dry-cleaning fastness, and tensile strength of silk fabrics dyed with green tea extracts before and after mordanting. Ultraviolet shielding effect, light fastness of silk fabrics dyed with green tea extracts was improved as compared with untreated silk fabric, and moreover those of camellia ash mordanted fabrics were improved remarkably. But iron mordanted fabrics deteriorated the color fastness. Tensile strength and elongation of silk fabrics dyed with Green tea extract only were increased but those of silk fabrics mordanted with camellia and bean chaff ash were decreased.
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