Browsing by Author "Eid, Basma M"

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Application of MCT-beta CD to Modify Cellulose/Wool Blended Fabrics for Upgrading Their Reactive Printability and Antibacterial Functionality
(KOREAN FIBER SOC, 2018-08) Ibrahim, Nabil A.; Khalil, Heba M; Eid, Basma M; Tawfik, Tawfik M.
Pre-loading of monochlorotriazinyl beta-Cyclodextrin (MCT-beta CD) onto/within viscose/wool (V/W) and cotton/wool (C/W) blended fabrics provide hosting cavities that can form host-guest inclusion complexes with reactive dyes in postprinting as well as with triclosan derivative or silver nanoparticles/hyperbranched polyamide-amine (AgNPs/HBPAA) composite in subsequent final antibacterial finishing step. Coloration properties, antibacterial activity against (S. aureus) and (E. coli) pathogenic bacteria, durability of the obtained products, according to the above mentioned route, to wash, surface morphology and composition of selected samples were investigated. Results obtained signify that premodification of the nominated substrates with MCT-beta CD (10 g/l), followed by reactive printing with mono-or bifunctional reactive dye (20 g/l), and subsequent post-finishing with triclosan derivative or AgNPs/HBPAA composite (15 g/l each) is an efficient treatments sequence for attaining reactive prints with significant antibacterial efficacy and noticeable durability to wash. Surface depositions of selected active ingredients were also confirmed using SEM and EDX analysis.
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.
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.