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RISS 인기검색어
- 검색키워드
- 저자 : Faqeer Mohammad (검색결과 2 건)
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Mohd Shabbir,Faqeer Mohammad 한국섬유공학회 2023 Fibers and polymers Vol.24 No.1
Phytochemicals, obtained from natural sources, have high importance for their practical implications owing to their inherentbiological characteristics. Naphthoquinone compounds (alkannin and shikonin) from Alkanna tinctoria are well knownfor antioxidant and coloring properties. Here, naphthoquinone-rich dyeing solution was obtained by aqueous extraction ofalkanet roots and applied on protein-based fabrics, i.e., wool. Bioactive colored fabrics were characterized for UV protection,antioxidant activity, and color characteristics. Ultraviolet (UV) protection ability was measured in terms of UV transmittanceand UPF (UV protection factor) values, and antioxidant activity in percentage. Some non-hazardous metal salts inpermissible concentrations were used as mordants, and their effects on coloration and bioactivities were studied. These saltssignificantly improved color characteristics and broadened the shade range, while it had little effect on bioactivities. Controldyeing with alkanet extract showed great potential for UV protection and antioxidant activity owing to the conjugated systemsin naphthoquinone compounds. Polar functional groups of naphthoquinones were responsible for adsorption on fabricsurfaces via chemical interactions.
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Exploring the Potential of Tannin Based Colorants Towards Functional Value Addition of Wool Textiles
Mohd Shabbir,Luqman Jameel Rather,Faqeer Mohammad 한국섬유공학회 2019 Fibers and polymers Vol.20 No.9
Nature has been a first inspiration for the evolution of mankind. Natural colorants of plants origin highlyinfluenced the textile industry and target a wide range of textile functionalities. Tannins from Terminalia chebula fruits havebeen explored to develop colored, UV protective and antioxidant functional wool textiles. Metallic mordants (Alum, ferroussulfate, and stannous chloride) under ecological permissible limits are utilized to establish the correlation with the functionalproperties achieved on textiles. Shades of various colors on wool are characterized in terms of CIEL*a*b* and color strength(K/S) values on Hunter-Lab spectrophotometer. Ultra-violet (UV) protection ability was measured in terms of UVtransmittance and UPF (UV protection factor) values. UV transmittance is consistently below 5 % in all dyed wool fabrics,while it was upto more than 30 % in undyed wool. Antioxidant results of both mordanted and unmordanted (control) dyedwool fabrics are found highly appreciable up to 99 % of activity. Multifunctional colored wool textiles are developed withecofriendly and economically viable process and resources.
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