Scientists from the Siberian Federal University in Krasnoyarsk have developed an ecological dye for textiles based on the bark of coniferous trees. They plan to patent this method and use it in the textile industry. Irina Krotova, representative of the SibFU Institute of Trade and Services, shared this information.
Researchers found that aqueous extracts of the bark of Siberian dark coniferous trees and preparations based on them improve the durability and antibacterial properties of cotton and blended fabrics. These properties are retained for five washes. Dyes based on a flavonoid complex derived from tree bark have been modified for use in the textile industry.
Available silver-based paints are expensive and can cause allergic reactions. Bark is a waste product from the sawmill process and can cause fires during storage. In addition, after the paint is obtained, wood waste can be used as a sorbent for cleaning contaminated areas. In this way, wastes are converted into useful substances.
Ecological dye imparts beige-brown tones to textile materials. When using environmentally neutral iron salts or potassium alum, the color range can be extended to black, which is rare for vegetable dyes.
Source: Ferra
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