Fabrics have been used broadly in daily life for an enormous variety of applications due to their intrinsic advantages, such as flexibility, renewability, and good processability. Integrating natural fabrics with metal−organic frameworks (MOFs) is an effective strategy to improve the added value of textiles with special functionalities. Here, a facile, lowcost, and scalable technology is reported for the in situ growth of MOFs on cotton fabrics. A uniform and dense coating of regular octahedral Cu-1,3,5-benzenetricarboxylic acid (CuBTC) crystals was formed on the fiber surface, followed by treatment with 1H,1H,2H,2H-perfluorooctyltriethoxysilane and triethoxyoctylsilane to create a superhydrophobic CuBTC@cotton fabric (SMCF), which greatly improved its water stability and extended superhydrophobic CuBTC's potential applications. The as-prepared MCF has a specific surface area of 229 m 2 /g, which is 11 times that of pristine fabrics (21 m 2 /g). This high porosity further endows the fabric with enhanced loading capacity of essential oils to enable excellent antibacterial ability. Moreover, the SMCF also exhibits excellent self-cleaning, UV shielding, and anti-icing performances. In addition, we performed COMSOL simulations to investigate the dynamic freezing process of water on the surface of samples, which agrees well with our experimental observations. By combining the merits of both fabrics and MOFs, the MCF is expected to extend the applications of traditional textiles in antifouling, safety, the fragrance industry, and healthcare for the next-generation multifunctional fabrics.
In this study, we fabricated the multifunctional fluorophenyl polysiloxane coatings with different grafting densities of fluorophenyl groups. The structure and emulsion stability of fluorophenyl polysiloxanes were analyzed by Fourier-transform infrared (FT-IR) spectrum, nuclear magnetic resonance, particle size, and zeta potential, and the application performance of fluorophenyl polysiloxanes were investigated. FT-IR spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy proved the successful application of fluorophenyl polysiloxanes onto cotton fabrics. Afterwards, the liquid repellency, thermal stability, and deepening performance of cotton fabrics treated with fluorophenyl polysiloxane coatings were investigated. Results showed that all the treated cotton fabrics possessed contact angles greater than 110 , and cotton fabrics treated with FPPS-23 (fluorophenyl polysiloxane with 23% theoretical fluorine content) obtained the best thermal stability. Additionally, the blue cotton fabric and orange cotton fabric treated with FPPS-23 had the best deepening performance with K/S values as 27.23 and 20.56, which increased by 34.20% and 16.82%, respectively.
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