![]() Carbohydr Polym 87:2093–2099Īlongi J, Colleoni C, Malucelli G, Rosace G (2012c) Hybrid phosphorus-doped silica architectures derived from a multistep sol–gel process for improving thermal stability and flame retardancy of cotton fabrics. Carbohydr Polym 87:627–635Īlongi J, Ciobanu M, Malucelli G (2012b) Thermal stability, flame retardancy and mechanical properties of cotton fabrics treated with inorganic coatings synthesized through sol–gel processes. Carbohydr Polym 85:599–608Īlongi J, Ciobanu M, Malucelli G (2012a) Sol–gel treatments on cotton fabrics for improving thermal and flame stability: effect of the structure of the alkoxysilane precursor. The Cotton-4BL-PDMS fabrics also exhibited good water repellent behavior, which displayed an initial contact angle larger than 130° and almost unchanged over time.Īlongi J, Ciobanu M, Malucelli G (2011) Novel flame retardant finishing systems for cotton fabrics based on phosphorus-containing compounds and silica derived from sol–gel processes. The char layer with good thermal resistance played a crucial role in suppressing flame spread. The significant improvement in flame retardancy was attributed to the catalytic effect of the melamine/PEI–PA coating on char formation and the char stabilization effect of PDMS. The peak heat release rates of the treated cotton fabrics were decreased by more than 50% in contrast to that of the original cotton. The flame retardant property was significantly enhanced as evidenced by the self-extinguishing behavior of Cotton-4BL and Cotton-4BL-PDMS fabrics in the vertical burning tests. Thermogravimetric analysis indicated that the addition of melamine/PEI–PA coating induced earlier degradation of cotton fabrics to form char, and the presence of PDMS further improved the char yield. The morphology and chemical composition of un-treated and treated cotton fabrics were measured by scanning electron microscopy equipped with Energy Dispersive X-ray analysis. Subsequently, the flame retardant treated cotton fabrics were impregnated with a diluted solution of poly(dimethylsiloxane) (PDMS) for improving water repellent behavior. In this study, we finished cotton fabrics with polyethylenimine (PEI)/melamine and phytic acid (PA) by layer-by-layer assembly to enhance their flame retardant properties. ![]()
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