Abstract
To reduce the flammability of cotton fabrics, an environmentally benign, simple and effective method was proposed. Coatings composed of phosphoguanidine/ATMP/alginate were deposited on the surface of the cotton fabrics through layer-by-layer (LbL) assembly. FTIR spectra indicate that the layer-by-layer deposition process is successfully carried out on the surface of cotton fabrics. TGA suggested that LbL coating can significantly increase the char residue. The results of MCC and vertical flame tests showed that the LbL coatings can remarkably enhance the fire safety properties of the cotton fabrics and a higher concentration of ATMP (2 wt%) can bring better effect of flame retardancy.
Highlights
Cotton fabrics is one of the most important natural textile fibers used to produce apparel, home furnishings, and industrial products, the low limiting oxygen index and combustion temperature (360-425 °C) makes the material highly flammable
It is indicated that the layer-by-layer deposition process is carried out on the surface of F3 cotton fabrics
Coatings composed of phosphoguanidine /ATMP /alginate were successfully deposited on the surface of cotton fabrics using a simple way that is layer by layer approach to improve the fire safety of the cotton fabrics
Summary
Cotton fabrics is one of the most important natural textile fibers used to produce apparel, home furnishings, and industrial products, the low limiting oxygen index and combustion temperature (360-425 °C) makes the material highly flammable. Halogenated and boroncontaining additives are widely used to improve the fire resistance of cotton fabrics, such as tris (2-chloroethyl) phosphate (TCEP), tris (1,3-dichloroisopropyl) phosphate (TDCPP) and tris (1-chloro-2-propyl) phosphate (TCPP)[3]. Despite their effectiveness, the potential toxicity and environmental problems emerge from cotton fabrics storage, transportation and combustion. Developing environmentally friendly, high efficiency and convenient operation techniques will be the best solution to flame retardant cotton fabrics for soft furnishings. The LbL assembly method was used to fabricate flame retardant coatings on various polymer matrices, including textiles, plastic plaques, and flexible polyurethane foams [10,11,12]. It is anticipated that this multilayered coatings will provide a simple and green solution to reduce the fire hazards of cotton fabrics
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