Browsing by Author "Ibrahim, Nabil A"

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Development of functionalized cellulose/wool blended fabrics for high performance textiles
(TAYLOR & FRANCIS LTD, 2017) Emam, Elamir M; El-Zairy, Mohamed Reda; Basma, M. Eid; Ibrahim, Dalia F; Ibrahim, Nabil A
Recently, increasing demands for high quality, high value-added, durable, safe and eco-friendly functional cellulose/wool blended fabrics have stimulated intensive research and development efforts. Therefore, the main goal of the present work was to develop new functional finishing formulations using citric acid/sodium hypophosphite (CA/SHP) cross-linking system along with certain bio-active agents based on triclosan, choline chloride, organosilane quaternary compound or chitosan to get anticrease/antibacterial bi-functionalized blends. Also, CA/SHP and bio-active agent based on AgCl/TiO2 finishing formulation was used to impart anti-crease/anti-bacterial/anti-UV multifunctionalities to the treated fabrics. Type and extent of improvement as well as durability to wash of the imparted function were governed by chemical composition and concentration of the active-additive as well as nature and extent of modification of the treated substrates. SEM images and EDX spectra of some samples were reported. In addition, the tentative reaction mechanisms were also discussed.
An Eco-Friendly Multifunctional Nano-Finishing of Cellulose/Wool Blends
(KOREAN FIBER SOC, KOREA SCIENCE TECHNOLOGY, 2018-04) Ibrahim, Nabil A; Emam, El-Amir M; Eid, Basma M; Tawfik, Tawfik M
A new approach for an eco-friendly multi-functionalization of cotton/wool (C/W) and viscose/wool (V/W) blended fabrics was investigated. In this study, Ag-nanoparticle (Ag-NP) and/or ZnO-nanoparticle (ZnO-NP) functional agents were incorporated into the finishing bath along with citric acid (CA) or succinic acid (SA) as ester-crosslinking or esterifying agent, and sodium hypophosphite catalyst using the padding technique. The obtained results indicated that the extent of multi-functionalization expressed as antibacterial activity, UV-blocking functionality and wrinkle recovery ability were determined by kind of nanomaterial, nature of carboxylic acid, i.e., bi- or tri-functional and type of substrate. The results also demonstrated that blended fabrics finished with Ag-NP/ZnO-NP/CA/SHP nano-finishing formulation exhibited outstanding durable multi-functional properties even after 10 washing cycles. In addition, the change in surface morphology and the existence of Ag and/or Zn onto the selected V/W fabric surfaces have been confirmed by SEM and EDX analysis respectively.
Eco-friendly plasma treatment of linen-containing fabrics
(TAYLOR & FRANCIS LTD, 2010) Ibrahim, Nabil A; Hashem, Mohammed M.; Eid, Mohammed A.; Refai, Raki; El-Hossamy, Mamdouh; Eid, Basma M.
In the present work, linen-containing fabrics were treated with atmospheric pressure plasmas of oxygen, air and nitrogen, and the impact of plasma treatment conditions on the surface chemistry and topography was evaluated. Plasma treatment is accompanied by a remarkable improvement in the hydrophilic properties: creation of new functional groups along with a noticeable increase in the affinity of treated substrates for subsequent H2O2-bleaching. The extent of improvement in wettability as well as subsequent bleachability is governed by both the plasma gas, i.e. oxygen air nitrogen none, and the discharge power, i.e. the higher the power supply, the shorter and greater was the modification extent. Oxygen or air plasma treatment significantly upgrades the hydrophilicity, enhances the subsequent bleachability, saves time, water and energy as well as prevents or decreases pollution at the source, i.e. an eco-friendly substitute for conventional scouring of linen-based textiles.
Environmentally sound approach for imparting antibacterial and UV-protection functionalities to linen cellulose using ascorbic acid
(Elsevier, 8/15/2019) Barakat, Soliman; Emam, Elamir; El-Zairy, Enas M; Eid, Basma M; Ibrahim, Nabil A
In this work, multifunctional linen cellulose fabrics were facilely developed by using an eco-friendly finishing formulations and the pad-dry/microwave fixation technique. Both reactant resin and citric acid have been employed as low- and zero-formaldehyde crosslinkers along with their proper catalyzing agents. Individual incorporation of ascorbic acid and selected phenolic compounds namely salicylic acid, resorcinol, and gallic acid, as natural active ingredient (AI-OH) along with PEG-400 or modified nonionic silicone-softener in ether- or ester-crosslinking formulation and their impacts on the performance, functional properties and degree of coloration of the finished fabrics were investigated. FTIR, SEM, and EDX analysis of selected samples were carried out. Results revealed that type of crosslinker, kind and concentration of active ingredient, as well as type of additive play an important role in the imparted functional properties. The durability of the imparted antibacterial and UV protection functional properties was confirmed by washing test. (C) 2019 Elsevier B.V. All rights reserved.