Fabrication of durable, fluorine-free superhydrophobic cotton fabric for efficient self-cleaning and heavy/light oil-water separation

Pal, Sukanta; Mondal, Sourav; Pal, Prasanta; Das, Ajit; Pramanik, Subhamay

doi:10.1016/j.colcom.2021.100469

Cited by 31 publications

(14 citation statements)

References 94 publications

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“…In contrast, the dip-coating method [35][36][37] is a simple, time-saving and environmentally friendly preparation method of superhydrophobic materials. Pal et al 38 fabricated superhydrophobic cotton by dip coating titanium dioxide sol onto the surface of cotton fabric to form a rough structure followed by hydrophobic 3-(trimethoxysilyl)propyl methacrylate surface modification. Shang et al 39 used tannic acid to activate the surface of cotton fabric which was then grafted with aminopropylisobutyl polyhedral oligomeric silsesquioxane (NH 2 -POSS) through the Schiff-base/ Michael-addition reaction with a WCA of 158.6°.…”

Section: Introductionmentioning

confidence: 99%

Robust multifunctional fluorine-free superhydrophobic fabrics for high-efficiency oil–water separation with ultrahigh flux

Xiong

Huang

et al. 2022

Nanoscale

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Section: Introductionmentioning

confidence: 99%

Robust multifunctional fluorine-free superhydrophobic fabrics for high-efficiency oil–water separation with ultrahigh flux

Xiong

Huang

et al. 2022

Nanoscale

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Section: Results and Discussionmentioning

confidence: 99%

“…These results confirmed that the material possessed the functionality as well as the superhydrophobicity after scratching with sandpaper. The durability of the material in harsh chemical and mechanical conditions made it more favorable for environmental applications over the recently developed composite by Lin et al 40,41 Discriminative Oil Separation from the Oil−Water Mixture by the Superhydrophobic SHMOF−PP Composite. The structural robustness and hydrophobic behavior of the SHMOF−PP composite inspired us to study its efficiency for the removal of oils from oil−water mixtures.…”

Section: Durability Of Shmof−pp Composite In Differentmentioning

confidence: 99%

“…The coating of PP fabric with the MOF in a single-step in situ procedure resulted in a composite named SHMOF–PP . This single-step procedure is advantageous over the recently developed composites for oil–water separation by Lin et al and Maity et al, which require multiple steps and tedious processes. , SHMOF–PP composite was examined for the separation of both light floating oils and heavy sedimentary oils from water. The separation efficiency, absorption capacity, and stability after repeated experiments of oil–water separation of the developed SHMOF–PP composite were investigated.…”

Section: Introductionmentioning

confidence: 99%

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Superhydrophobic Self-Cleaning Composite of a Metal–Organic Framework with Polypropylene Fabric for Efficient Removal of Oils from Oil–Water Mixtures and Emulsions

Gogoi

Rana

Ghosh

et al. 2022

ACS Appl. Nano Mater.

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Here, we report a metal–organic framework (MOF) [Hf6O4(OH)4(TFNDC)6]·6H2O·2DMF [SHMOF, where TFNDC = 1-(2,2,2-trifluoroacetamido)naphthalene-3,7-dicarboxylate], which possesses excellent chemical and thermal stability along with remarkable hydrophobic characteristics. The hydrophobic SHMOF was used for in situ coating on the polypropylene (PP) fabric to make a superhydrophobic SHMOF–PP fabric composite. The immobilization of nanocrystalline particles of SHMOF creates a nanoscale hierarchy that enhances the hydrophobicity of the material. The superhydrophobic SHMOF–PP composite showed a water contact angle of 160°. The successful integration of the MOF compound with PP fabric was confirmed using field-emission scanning electron microscopy, X-ray powder diffraction spectroscopy, Fourier transform infrared spectroscopy, and energy-dispersive X-ray analysis experiments. Superhydrophobic SHMOF–PP composite displayed a high separation efficiency (93–99%) for separating light, heavy, and crude oils from oil–water mixtures. The flux for oil–water separation was found to be 13–18k L m–2 h–1. Importantly, the SHMOF–PP composite can be used repetitively up to a minimum of 20 times for oil–water separation. The recyclability was also maintained in high acidic and alkaline media. Moreover, superhydrophobic SHMOF–PP composite showed excellent oil absorption capacity (29–39 g/g) for heavy and light oils at ambient temperature. A gravity-driven active-filtration process and separation against the gravity process were also performed to examine the flexibility of the composite for separation. We demonstrate that the SHMOF–PP composite has the merit of very high separation efficiency, absorption capacity, good recyclability, and exceptional robustness, showing high potential for versatile oil–water separation. Additionally, the material displayed noticeable self-cleaning and antifouling properties. The SHMOF–PP composite also exhibited good efficiency (95–99%) and flux density (1845–1899 L m–2 h–1) for the separation of water-in-oil emulsions.

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“…Water repellency properties in textiles can be achieved in a number of ways, using hydrophobic fibers, dense fabric structure, and chemical and/or physical surface modifications [ 6 , 7 ]. In functional outerwear made of multilayer materials, the most widely used finishes are durable water repellents (DWR), whose role is to lower the surface free energy of the material and achieve water-repellent properties.…”

Section: Introductionmentioning

confidence: 99%

Quality and Quantity Assessment of the Water Repellent Properties of Functional Clothing Materials after Washing

et al. 2022

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The aim of the research was to evaluate the changes in the surface properties of five functional clothing materials with water-repellent finishes (including PFC-free finish) after 1, 5, and 10 washes with three detergents. A new approach to the interpretation of the water-repellent properties of textile materials is presented, based on two techniques, i.e., the spray test method and contact angle measurements. The results showed that washing materials with hydrophobic finishes can cause significant changes in their properties, which are mainly dependent on the composition and structure of the material, as well as the type of hydrophobic finish. The PFC-free finish is the least resistant to washing. For all materials with PFC finishes, the water repellency depends on the fluorine content on the surface and fabric topography. It was also found that increasing washing frequency resulted in a gradual decrease in water repellency. The loss of water repellency below an acceptable level (Grade 3) occurred after the fifth washing for all materials. Significant differences in the interpretation of the results of the spray test and contact angle measurements were observed. Using these methods separately provides information on the changes in the surface properties of the tested materials; however, their parallel application allows for obtaining complementary data, which is important for the proper interpretation of results.

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Fabrication of durable, fluorine-free superhydrophobic cotton fabric for efficient self-cleaning and heavy/light oil-water separation

Cited by 31 publications

References 94 publications

Robust multifunctional fluorine-free superhydrophobic fabrics for high-efficiency oil–water separation with ultrahigh flux

Robust multifunctional fluorine-free superhydrophobic fabrics for high-efficiency oil–water separation with ultrahigh flux

Superhydrophobic Self-Cleaning Composite of a Metal–Organic Framework with Polypropylene Fabric for Efficient Removal of Oils from Oil–Water Mixtures and Emulsions

Quality and Quantity Assessment of the Water Repellent Properties of Functional Clothing Materials after Washing

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