Utilization of Longan Leaf Extract for Dyeing and UV Protection of Silk Fabric Using Pre-Mordanting Method

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Abstract:

Natural dye extracted from the longan leaves was applied to a silk fabric by an exhaustion dyeing process. The dyeing was conducted with and without metallic salt mordants using pre-mordanting. It was observed that with an increase in the dye concentration, the ultraviolet (UV) protection factor (UPF) values ranged between good and very good for the silk fabric. In addition, a darker color, such as that provided by a CuSO4 and FeSO4 mordant, gave better protection because of higher UV absorption. The results confirmed that natural dyes from longan leaf extract with metal mordants have potential applications in fabric dyeing and in producing UV-protective silk fabrics.

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Advanced Materials Research (Volumes 1030-1032)

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438-441

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September 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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DOI: 10.1080/00405001003722369

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