UV Protection and Dyeing Properties of Wool Fabrics Dyed with Aqueous Extracts of Madder Roots, Chamomiles, Pomegranate Peels, and Apple Tree Branches Barks

An aqueous solution containing a natural colorant (myrrh extract) was obtained by extraction from myrrh using water as an extracting solvent at 90℃ for 90 min with a fixed material to liquor ratio of 1:10. The dyeing properties, color fastness and deodorizing/antibacterial performance of fabrics (cotton, silk and wool fabrics) dyed with myrrh extract were evaluated. The main component in myrrh extract was found to be polysaccharides composed of D-galactose/D-glucuronic acid/L-arabinose and protein. The yellow-red color of fabrics dyed with myrrh extract was attributed to the copper (I) oxide component. The K/ S value of the dyed fabrics increased in the order of cotton < silk < wool. The washing, water and acid/alkaline perspiration fastness of dyed cotton/silk/wool fabrics were good (Grade 4–5), except light fastness (Grade 1–3). The deodorizing performance of dyed fabrics against ammonia and acetic acid was found to be significantly better than the control (undyed) fabrics. The dyed fabrics exhibited an excellent antibacterial performance (99.9% bacteriostatic reduction rate) against both Klebsiella pneumonia and Staphylococcus aureus. These results highlight the strong potential of the natural dyed fabrics as a functional material with both high antibacterial activity and deodorizing function.

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Aqueous extraction of buckwheat hull and its functional application in eco-friendly dyeing for wool fabric

Textile Research Journal ◽

10.1177/0040517519877465 ◽

2019 ◽

Vol 90 (5-6) ◽

pp. 641-654 ◽

Cited By ~ 2

Author(s):

Wei Zhang ◽

Jiming Yao ◽

Peng Huang ◽

Shuai Xing

Keyword(s):

Textile Industry ◽

Langmuir Model ◽

Uv Protection ◽

Wool Fabric ◽

Synthetic Dyes ◽

Dyeing Process ◽

Wool Fabrics ◽

Monolayer Adsorption ◽

Reduction Stability ◽

Agricultural Byproduct

As a cheap and abundant agricultural byproduct, buckwheat hull is expected to be applied in many fields such as textile, biotechnology, and medicine. In this paper, the physicochemical properties of buckwheat hull extraction (BHE) and its dyeing abilities for wool fabric with different eco-friendly mordants and methods were studied. The theoretical process, colorfastness, and UV-protection properties of the dyed wool fabric with BHE were investigated. The results showed that BHE solution had good thermal and reduction stability. The dyeing process of BHE on wool was in accordance with the Langmuir model and had uniform monolayer adsorption. Wool fabrics dyed directly or through a mordanting process demonstrated good washing colorfastness and acceptable crocking- and light colorfastness. The dyed wool fabrics with KAl2+ and meta-mordanting showed excellent UV-protection as well as exceptional antibacterial activity against Escherichia coli. Therefore, BHE presents a novel alternative for some synthetic dyes that are applied in the textile industry.

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