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    Development of Cotton Fabrics via EVA/SiO2/Al2O3 Nanocomposite Prepared by gamma-Irradiation for Waterproof and Fire Retardant Applications

    Year: 2022

    Journal: J. Inorg. Organomet. Polym. Mater., Volume 32, OCT, page 4039–4056

    Authors: Elbarbary, Ahmed M.; Elhady, M. A.; Gad, Yasser H.

    Organizations: Science, Technology & Innovation Funding Authority (STDF); Egyptian Knowledge Bank (EKB)

    Keywords: Cotton fabric; Ethylene vinyl acetate copolymer; Silicon dioxide; Aluminum oxide nanoparticles; Radiation; Waterproof; Flame retardant

    Development of cotton fabric (CF) properties using nanocomposites via coating method was of considerable interest for wide applications. This article aims at developing CF properties by coating treatment using ethylene-vinyl-acetate (EVA), silicon dioxide (SiO2), aluminum oxide (Al2O3) nanoparticles and gamma-irradiation widely used in waterproof and flame retardant applications. EVA-based nanocomposites, EVA/SiO2, EVA/Al2O3, and EVA/SiO2/Al2O3, were synthesized by gamma-irradiation and the highest gel content of 81.2-95.3% was achieved at 30 kGy. The physicochemical properties of EVA-based nanocomposites were characterized by FT-IR, XRD, DSC and SEM techniques. Usage of irradiated EVA and EVA-based nanocomposites for treatment of CF by coating technique was successfully achieved. This technique provides a simple and versatile method leading to excellent uniform and smooth surface morphology without aggregation. The weight gain, mechanical properties, thermal properties, water vapor permeability and flame-retardant properties of the modified CF were evaluated. Moreover, compared with control CF, the resistivity of water absorptivity and hydrophobic property and the thermal stability were gained. The flame retardant properties of CF samples were performed using limited oxygen index (LOI) and vertical burning flame tests. LOI percentages of CF/EVA/SiO2, CF/EVA/Al2O3 and CF/EVA/SiO2/Al2O3 increased to 25.3, 27.5, and 29.3%, respectively. Untreated CF ignited and burned rapidly after 5 s. Meanwhile, the treated CF hold flame resistance properties and the burning time prolonged to 25 s. The results of the treated CF providing revealed hydrophobic and protective capability of the fabrics from being destroyed by burning, and support their further use in waterproof and flame retardant applications of fabrics.
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