A superhydrophobic and flame-retardant cotton fabric fabricated by an eco-friendly assembling method

Abstract

A novel eco-friendly and durable superhydrophobic and flame-retardant cotton fabric with fluorine-free, halogen-free was prepared via step-by-step dip-coating and spraying technology. At first, common cotton fabric was impregnated in the flame-retardant ethoxysilane-terminated phosphate polyurethane. Afterwards, methanol mixture containing silica nanoparticles, methyl triethoxysilane, and dihydroxy-terminated polydimethylsiloxane was sprayed on the surface of the cotton fabric. Finally, a flame-retardant cotton fabric with micro-nano rough surface and low surface energy was formed. The resulting superhydrophobic and flame-retardant cotton fabric exhibited superamphiphobicity with the contact angle and sliding angle of 160° and 6°, respectively, while flame retardancy with limited oxygen index of 28.1%. and flame self-extinguishing. Furthermore, this superhydrophobic and flame-retardant cotton fabric showed robust superhydrophobicity and flame-retardancy after undergoing 1000 cycles of abrasion, 60 min of ultrasonic washing and 50 standard machine washing cycles, in sequence, indicating its potential as a multifunctional protective textile fabric. Additionally, the method proposed in this study can effectively solve durability and environmental problems currently faced by the coated fabric with superhydrophobicity and flame-retardancy.

A sustainable strategy for preparation of flame-retardant cotton fabric by phosphorylation of recycled cotton

“…26 The peaks at 1080 cm −1 and 840 cm −1 were the characteristic peaks of P–O–C and P–OH stretching vibration in CPAS. 5,6,27 These results showed that CPAS was successfully synthesized.…”

“…26 The peaks at 1080 cm À1 and 840 cm À1 were the characteristic peaks of P-O-C and P-OH stretching vibration in CPAS. 5,6,27 These results showed that CPAS was successfully synthesized. As shown in Figure 4, TG measurements were carried out to analysis the thermal decomposition behavior of cotton waste and CPAS.…”

Recent developments in preparation, properties, and applications of superhydrophobic textiles

“…The resulting products could obtain the desired superhydrophobicity and be successfully employed in applications of oil-water separation, [114][115][116] self-cleaning, [117][118][119] sewage disposal, 120 anti-icing, 121 anti-corrosion, 122 drag-reduction of fluids, 123 medical gauze and bandaids, [124][125][126] and protective clothing. [127][128][129][130][131]…”

Superhydrophobic Flexible Strain Sensors Constructed Using Nanomaterials: Their Fabrications and Sustainable Applications

“…However, the use of superhydrophobic materials in sensor fabrication often presents challenges such as limited flexibility, difficult integration, and high cost. In order to address these issues, researchers have started investigating the integration of superhydrophobic materials with flexible electronic technology to create superhydrophobic flexible sensors that possess de-icing capabilities [58], self-healing properties [59,60] or flame retardant properties [61]. Such sensors not only exhibit adaptability to extreme environmental conditions, but also possess excellent flexibility and integration, making them easily applicable to a wide range of devices.…”