Browsing by Author "Eid, B. M"

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    Eco-friendly modification and antibacterial functionalization of viscose fabric
    (TAYLOR & FRANCIS LTD, 2017) Eid, B. M; El-Zairy, E. M. R.; Ibrahim, N. A.
    Pretreatment of viscose fabric with monochlorotraizinyl -cyclodextrin (MCT-CD), as an eco-friendly modifying agent, is accompanied by creation of hosting nanocavities onto the cellulose structure thereby enabling inclusion of certain antibacterial agents namely triclosan, as a classic agent, and AgNO3, as well as bioactive agents like green tea extract and Aloe vera gel. The efficiency of hosting the nominated antibacterial agents to confer antibacterial functionality is governed by the type of modification method and follows the decreasing order: exhaustion>pad-steam fixation>pad-dry-cure. The imparted antibacterial functionality of MCT-CD-loaded fabric samples is determined by type of the hosted antibacterial agent into cavities of CD and follows the decreasing order: AgNO3>green tea extract>triclosan>Aloe vera gel. Nitrogen content analysis, FTIR spectra, SEM image and EDX spectrum of Ag-loaded fabric sample confirmed the impact of suggested treatment sequence on the chemical and surface properties of the functionalized viscose fabric. The results also demonstrate that the imparted antibacterial activity against S. aureus (G+ve) and E. coli (G-ve) bacteria slightly decreased after 15 washing cycles.
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    Single-stage process for bifunctionalization and eco-friendly pigment coloration of cellulosic fabrics
    (TAYLOR & FRANCIS LTD, 2016) Abou Elmaaty, T. M; Eid, B. M; Abd El-Aziz, E; Ibrahim, N. A
    A facile single-stage process for enhancing the antibacterial activity and UV-shielding property of cotton and viscose pigment prints was reported. Results indicated that both the functional and coloration properties of the obtained pigment prints were improved significantly by incorporation of TiO2 nano sol (average molecular size approximate to 5 nm, 15 g/kg) into the solvent-free pigment printing pastes. Differences in the imparted antibacterial activity and UV-blocking properties as well as in the depth of the modified pigment prints were attributed to the differences in the type of cellulosic substrate, efficiency of the used binding agent, extent of loading, and immobilizing both the TiO2-NPs and pigment particles during the microwave-fixation step as well as on the type of pigment colorant. Also, the obtained results demonstrated that the modified pigment prints, i.e. TiO2-NPs-loaded pigment prints, showed durable antibacterial efficacy and UV-shielding capacity even after 15 washing cycles, regardless of the used substrate. The scanning electron microscope images and EDX spectra of selected samples were also reported.