Dyeing and Anti-Ultraviolet Properties of Anthocynins Extracted from Purple Sweet Potatoes for Silk

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Abstract:

Purple sweet potatoes were applied to extract anthocyanins for dyeing silk fabrics. Dyeing and anti-ultraviolet properties of anthocyanins were investigated. The color yield, exhaustion behaviors, fastness properties and anti-ultraviolet properties of dyed silk fabrics were also discussed. The results showed that high color strength value (K/S value = 3.01) was achieved at 50 °C and pH 3. The washing and rubbing fastness properties were enhanced by mordant dyeing method using alum. The dyed silk samples displayed good anti-ultraviolet and the UV transmittance was decreased by 46% at 300nm and 58% at 360nm.

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371-375

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January 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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