Fabrication of superoleophobic cotton fabric for multi-purpose applications

Tudu, Balraj Krishnan; Kumar, Aditya; Bhushan, Bharat

doi:10.1098/rsta.2019.0129

Cited by 16 publications

(11 citation statements)

References 19 publications

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“…The antibacterial activity of uncoated and coated sample was measured against E. coli. bacteria using disk diffusion method ( Tudu, Kumar and Bhushan, 2019 ). Initially, both uncoated and coated cotton fabric were cut into the circular shape with diameter 7 mm.…”

Section: Methodsmentioning

confidence: 99%

Development of a microbial coating for cellulosic surface using aloe vera and silane

Chauhan

Kumar

2020

Carbohydrate Polymer Technologies and Applications

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The highly contagious nature of SARS-CoV-2 (COVID-19) virus has created a havoc effect all over the world in a very short period. The most effective method for precaution of this virus as suggested by WHO is use of PPEs (triple layered face mask, body suits) and social distancing. However, the frontline doctors and medical staff have high risk of exposure to the virus during treatments and removal and discarding of the PPEs. Also the PPEs are of the onetime use and wearing these PPEs in hot and humid seasons is very uncomfortable. A possible solution of this problem is if clothes are anti-bacterial and anti-viral in nature, one single-layered will be sufficient and the spread of virus will also be minimized. Considering this, we have designed a facile and durable anti-wash antimicrobial coating on cloth by aloe vera and hexadecyltrimethoxysilane (HDTMS). In lab scale study, present coating shows good chemical and thermal stability making it reusable multiple times even after repeated washing. The coated cloth reveals the excellent anti-dirt and stain resistance properties leading to complete non-adherence of dirt and stain (e.g. Color, food, ink) on it. Anti-bacterial and anti-fungi properties of the coated cloth were confirmed by doing E. coli (bacteria) and A. Niger (fungus) culture studies, respectively. This coating is imbibed with well-known anti-viral agent aloe vera which inhibits the attachment of the virus on the surface. The water-repellent nature of the coating combined with the use anti-viral agent, aloe vera makes it a potential anti-COVID-19 coating.

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Section: Methodsmentioning

confidence: 99%

Development of a microbial coating for cellulosic surface using aloe vera and silane

Chauhan

Kumar

2020

Carbohydrate Polymer Technologies and Applications

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“…The mechanical durability of the superhydrophobic coating was inspected by water jet, adhesive tape, and sandpaper abrasion test. [ 9,27 ] The water jet produced by syringe and impacted on both uncoated and coated glass substrate. The water jet spreads over on glass substrate due to its hydrophilic nature.…”

Section: Resultsmentioning

confidence: 99%

Superhydrophobic Nanocomposite Coatings of Hydrophobic Silica NPs and Poly(methyl methacrylate) with Notable Self‐Cleaning Ability

Sutar

Gaikwad

Latthe

et al. 2020

Macromolecular Symposia

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The present paper describes a facile and inexpensive dip coating method for preparation of hierarchical superhydrophobic nanocomposite coating. The hydrophobic silica nanoparticles (NPs) are synthesized via sol–gel technique. The superhydrophobicity of the coating is controlled by adjusting the concentration of silica NPs in poly (methyl methacrylate) (PMMA). After optimization, the coating exhibited water contact angle of 165° and sliding angle of 4°. The surface morphology of the superhydrophobic coatings revealed hierarchical rough structure formed on the glass substrate, which enable air trapping. The prepared superhydrophobic coating showed wetting stability under water jet impact with notable self‐cleaning performance. The mechanical stability of the superhydrophobic coating is studied using sandpaper abrasion and adhesive tape peeling test. Such highly non‐wettable and self‐cleaning coatings have potential in various practical applications.

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“…Treatment of the cotton fabric surfaces is challenging due to the inherent heterogeneous roughness with low thermal stability. Several methods such as dip coating [31,32], solution immersion coating [19,33,34], sol-gel based coating [35], wet chemical process [36] and spray coating [37] have been used to make cotton fabric superhydrophobic. Physical and chemical durability has been a concern.…”

Section: Coated Cotton Fabric For Separation Of Immiscible Oil-water Mixturesmentioning

confidence: 99%

“…Their coating repelled oils with surface tension as low as 47.70 mN m −1 (ethylene glycol). Tudu et al [34] fabricated superhydrophobic cotton fabric by simple immersion in perfluorodecyltriethoxysilane (PFDTS) solution. Their coating repelled oils with surface tension as low as 27.05 (hexadecane).…”

Section: Coated Cotton Fabric For Separation Of Immiscible Oil-water Mixturesmentioning

confidence: 99%

“…Their coating repelled oils with surface tension as low as 27.05 (hexadecane). Both Chauhan et al [19] and Tudu et al [34] demonstrated that coated fabric can be used for oilwater separation as long as surface tension of oil in the mixture was low enough that it wetted the coated surface.…”

Section: Coated Cotton Fabric For Separation Of Immiscible Oil-water Mixturesmentioning

confidence: 99%

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Bioinspired oil–water separation approaches for oil spill clean-up and water purification

Bhushan

2019

Phil. Trans. R. Soc. A.

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Water contamination is one of the major environmental and natural resource concerns in the twenty-first century. Oil contamination can occur during operation of machinery, oil exploration and transportation, and due to operating environment. Oil spills occasionally occur during oil exploration and transportation. Water contamination with various chemicals is a major concern with growing population and unsafe industrial practices of waste disposal. Commonly used oil–water separation techniques are either time consuming, energy intensive and/or environmentally unfriendly. Bioinspired superhydrophobic/superoleophobic and superoleophobic/superhydrophilic surfaces have been developed which are sustainable and environmentally friendly. Bioinspired oil–water separation techniques can be used to remove oil contaminants from both immiscible oil–water mixtures and oil–water emulsions. Coated porous surfaces with an affinity to water and repellency to oil and vice versa are commonly used. The former combination of affinity to water and repellency to oil is preferred to avoid oil contamination of the porous substrate. Oil–water emulsions require porous materials with a fine pore size. Recommended porous materials include steel mesh and cotton fabric for immiscible oil–water mixtures and cotton for oil–water emulsions. A review of various approaches is presented in this paper. This article is part of the theme issue ‘Bioinspired materials and surfaces for green science and technology (part 2)’.

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Fabrication of superoleophobic cotton fabric for multi-purpose applications

Cited by 16 publications

References 19 publications

Development of a microbial coating for cellulosic surface using aloe vera and silane

Development of a microbial coating for cellulosic surface using aloe vera and silane

Superhydrophobic Nanocomposite Coatings of Hydrophobic Silica NPs and Poly(methyl methacrylate) with Notable Self‐Cleaning Ability

Bioinspired oil–water separation approaches for oil spill clean-up and water purification

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