Browsing by Author "El-Zairy, W."

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    Combined dyeing and resin finishing of wool/viscose and cotton/wool blends
    (TAYLOR & FRANCIS INC., 2006) Ibrahim, NA; Allam, E.; El-Hosamy, MB; El-Zairy, MR; El-Zairy, W.
    The objective of this study is to establish a single-stage process for anionic dyeing and easy-care finishing of wool/viscose (60/40) and cotton/wool (70/30) blended fabrics. Optimum conditions for maximizing dyeability and achieving high resiliency are: Fixapret (R) ECO (50 g/L), triethanolamine hydrochloride (20 g/L), ammonium persulfate (7.5 g/L) at 160 degrees C for 3 min. The extent of improvement in both the depth of shade and easy-care properties is determined by the nature of substrate and follows the descending order wool/viscose > cotton/wool. On the other hand, the extent of dye fixation and the change in fastness properties of the obtained dyeings are determined by the class of dyestuff.
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    Union dyeing of easy care-finished wool/viscose and cotton/wool blends
    (TAYLOR & FRANCIS INC., 2006) Ibrahim, NA; Allam, E.; El-Hosamy, MB; El-Zairy, MR; El-Zairy, W.
    Wool/viscose (60/40) and cotton/wool (70/30) blended fabrics have been easy-care finished in the presence of certain nitrogenous additives to produce readily dyeable cationic cellulose for competitive dyeing with wool dyes. The enhancement of easy care properties and improvement in post-dyeing of the finished fabrics were determined by the nature of substrate (wool/viscose > cotton/wool), type of catalyst (ammonium persulfate > ammonium sulfate > ammonium chloride > none), the kind of nitrogenous additive, as well as the type of polyethylene glycol (PEG-400 > PEG-200 > NONE). Using triethanolamine hydrochloride as a reactive/nitrogenous additive (30 g/L) in the finishing formulation as well as curing at 150 degrees C/3 min make it possible to attain higher fabric resiliency along with better dye receptivity, regardless of the used anionic dye. However, the change in dyeing and fastness properties of obtained dyeing is governed by the nature of the anionic dye.