FACULTY OF ARTS & DESIGN Research paper

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    Innovation of Radically New Colorant Hybrid Nanocomposite for Printing Various Textile Fabrics
    (KOREAN FIBER SOC, 2019-01) Hebeish, A. A.; Shahin, A.A; RaghebI., A.; E. E, Abd El-Thalouth; H. A, Allam; H A, Shaban
    New benign colorant nanoparticles were innovated. The innovation is based on reacting the Indigo Blue Vat Dye with a natural clay named montmorillonite (K10) under sonication. A mixture of the dye and clay (1:1) at a ratio was used. The obtained new colorant nanoparticles in the form of hybrid nanocomposites were applied as a nano pigment in printing on various fabrics. The new colorant succeeded in printing silk, wool, cotton, polyester, and nylon as well as their different blends in the presence and absence of binder. Prints of the new colorant were compared with those obtained using commercial pigment. The effect of adding different amounts of binder to the printing paste on major technical properties of the prints was also investigated. Evaluation of the various printed fabrics was performed through monitoring color strength (K/S), TEM images, SEM micrographs, and overall fastness properties.
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    A new approach for the functionalisation of polysulfone with beta-cyclodextrin
    (IOP PUBLISHING LTD, 2019-10) Abou Elmaaty, Tarek M; Russell, Stephen J; Goswami, Parikshit; Abdeldayem, Shereen A; Smith, Timothy
    Functionalisation of polysulfone (PSU) with beta-cyclodextrin (beta.CD) is a potential vehicle for the design of drug delivery devices via complexation. In this approach, PSU film was first pre-activated by air plasma to facilitate a post-grafting reaction with methacrylic acid (MAA) and then amination by diamino-dipropylamine (DADPA). Finally, beta.CD was anchored on to PSU-PMAA-DADPA surfaces via covalent bonding with amino groups. Creation of functional groups was confirmed by ATR-FTIR and functionalisation of PSU-PMAA-DADPA film with beta.CD was verified by UV absorbance following immersion in phenolphthalein (PHP), which formed inclusion complexes with the attached beta.CD. A reduction in absorbance of the PHP solution was observed, together with an increase in PHP exhaustion on to the PSU-PMAA-DADPA films as a result of functionalisation with beta.CD. Increasing the amount of beta.CD attached to the PSU-PMAA-DADPA films progressively increased PHP exhaustion until saturation was achieved.
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    A smart approach to add antibacterial functionality to cellulosic pigment prints
    (ELSEVIER SCI LTD, 2013) Ibrahim, N. A.; Eid, B. M.; Abou Elmaaty, T. M.; Abd El-Aziz, E.
    This study was devoted to enhancing the antibacterial functionality of pigment printed cotton, linen and viscose fabrics. Ag-NP's/PVP colloid, triclosan derivatives, chitosan or choline chloride was successfully incorporated into the pigment paste followed by printing and microwave curing to impart antibacterial activity to the cellulosic prints. Results obtained demonstrate that the modified pigment prints exhibit a remarkable antibacterial activity against the G+ve (Staphylococcus aureus) and G-ve (Escherichia coli) bacteria with a noticeable durability after 20 washing cycles without adversely affecting the printing and softness properties. The extent of printability and functionality of the nominated substrates are significantly governed by the type of: bio-active ingredient, binder, pigment and substrate. TEM, SEM and EDX analysis confirmed the formation of Ag-NP's/PVP colloid, of particle size range 7-14 nm, deposition of cross-linked-binder film onto the modified pigment prints, and the existence of elementary Ag and Si loaded onto fabrics surface, respectively. (C) 2013 Elsevier Ltd. All rights reserved.