Browsing by Author "Ghazal, H. A."

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    A novel treatment for multifunctional finishing and reactive dyeing of polyamide-6-cotton blend
    (TAYLOR & FRANCIS LTD, 2011) Ibrahim, N. A.; El-Zairy, M. R.; El-Zairy, W. M.; Ghazal, H. A.
    A new approach to simultaneous functional finishing and reactive dyeing of polyamide-6-cotton fabric (50/50) is developed. The extent of improvement in the functional and dyeing properties is determined by the UV-absorber, UV-Sun(R) CEL, concentration, type and concentration of the used reactive dye as well as the treatment sequence. The UV-protection and the antibacterial properties, against S. aureus (G+ve) and E. coli (G-ve) bacteria, of the simultaneously finished and dyed fabric samples are maintained even after 15 washing cycles. After 15 washing cycles, the depth of shades and the fastness properties of the obtained dyeings are not seriously affected. The incorporation of the used UV-absorber onto the blend fibres was also confirmed by SEM analysis.
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    A smart approach for enhancing dyeing and functional finishing properties of cotton cellulose/polyamide-6 fabric blend
    (ELSEVIER SCI LTD, 2011) Ibrahim, N. A.; El-Zairy, W. M.; El-Zairy, M. R.; Eid, B. M.; Ghazal, H. A.
    Polyamide-6/cotton fabric blend was modified by chemical treatments using citric acid (30 g/L) as acrosslinker, an acrylate binder (10 g/L), Na-hypophosphite (6 g/L) as a catalyst in the presence of basic dye or pigment colorant (15 g/L) employing a pad-dry-cure technique (wet-pickup 80%, 80 degrees C/5 min and 180 degrees C/2 min respectively). Combined modifying and dyeing of the treated fabric samples resulted in a significant improvement in the extent of coloration along with a remarkable improvement in the imparted functional properties namely UV-B protection and antibacterial function. The change in K/S value as well as in the fastness properties ratings of the obtained dyeings along with variation in their functional properties depend on the ester-crosslinker/catalyst concentration, type and concentration of the coloring agent as well as thermo-fixation temperature. Mode of interaction was reported, and surface modification was also confirmed by SEM analysis. (C) 2010 Elsevier Ltd. All rights reserved.