Fabrication of stable fluorine-free superhydrophobic fabrics for anti-adhesion and self-cleaning properties

Foorginezhad, Sahar; Zerafat, M. M.

doi:10.1016/j.apsusc.2018.09.058

Cited by 99 publications

(49 citation statements)

References 72 publications

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“…The absorption band at 699 cm −1 is caused by the deformation vibration band between the carbon atom on the benzene ring of PS microsphere and the hydrogen atom linked to it [19]. There were obvious absorption peaks at 790 cm −1 , 1257 cm −1 , 1413 cm −1 , and 2966 cm −1 , which were the characteristics of Si-CH3 tensile vibration of PDMS [20,21]. Comparing the infrared spectrum of the blend films with PS and the spectrum of the organic matrix blend film without PS, we find that there were no other characteristic absorption band.…”

Section: Resultsmentioning

confidence: 97%

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

et al. 2020

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In this paper, homogeneous polystyrene (PS) microspheres with controllable sizes of 40 nm, 80 nm, and 120 nm were synthesized by controlling the temperature of solvothermal method. In order to explore the effect of PS microspheres on dielectric-hydrophobic properties of the composite films, the composite films containing polystyrene, Polydimethylsiloxane, and P(VDF-TrFE) with high dielectric and hydrophobicity were successfully prepared by a simple and feasible solution blending method. The dielectric constant and hydrophobicity of composite films were boosted by increasing the mass fraction of PS content and decreasing the size of PS due to the enhanced interfacial polarization and the uniform surface micro bulge structure. Meanwhile, the composite films maintain a low loss tangent. Typically, the dielectric constant with 5 wt.% 40 nm PS reached to 29 at 100Hz, which is 4 times that of PDMS/P(VDF-TrFE) (mass ratio: 2/3). Otherwise, the largest the contact angle of 126° in the same composition was remarkably larger than the pure PDMS/P(VDF-TrFE) (110°). These improved properties have more potential applications in the electric wetting devices.

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Section: Resultsmentioning

confidence: 97%

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

et al. 2020

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“…There has heretofore been a considerable interest in the fabrication of superhydrophobic textile fabrics from the developmental point of view of novel practical applications such as self-cleaning, anti-corrosion, friction reduction, and anti-icing characteristics [2][3][4][5][6][7]. We can find a variety of reports on the exploration of superhydrophobic textiles based on the creation of the roughness surface by the grafting polymerization [12,13], layer-by-layer assembly [14,15], dip-coating [16][17][18][19][20], chemical vapor depositing [21][22][23], and spray coating [24][25][26][27][28]. During our comprehensive studies on the exploration of superhydrophilic/superoleophobic, superamphiphobic, and superhydrophobic/superoleophilic surfaces by using two fluoroalkylated oligomer [26][27][28][29][30], two fluoroalkylated vinyltrimethoxysilane oligomer (R F -(CH 2 CHSi(OMe) 3 ) n -R F :R F -VMSi) was shown to be a useful tool for the surface modification of glass, giving not only good oleophobicity but also a perfectly superhydrophobic characteristic with non-wetting properties against water droplets [31].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cotton Fabric with Superoleophilic/Superhydrophobic Characteristic on the Modified Surface by Using Fluoroalkylated Oligomeric Silica/Triazine Derivative Nanocomposites

2020

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Two fluoroalkylated vinyltrimethoxysilane oligomer (R F -(CH 2 CHSi(OMe) 3 ) n -R F ; n = 2, 3; R F = CF(CF 3 )OC 3 F 7 :R F -VMSi) in methanol reacted with aqueous sodium carbonate solution containing 2-hydroxy-4,6-dichloro-1,3,5-triazine sodium salt (TAZ) to provide two fluoroalkylated oligomeric silica/TAZ nanocomposites (R F -VMSiO 2 /TAZ). The original cotton fabric gives an oleophilic/hydrophilic property on its surface; however, modified cotton fabric surface with R F -VMSiO 2 /TAZ composites was demonstrated to provide highly oleophobic/superhydrophobic property on the surface. We can observe a remarkable time-dependent decrease of the contact angle of dodecane (oil) on the modified surfaces, and the contact angles of dodecane were found to decrease effectively from 55 • -83 • to 0 • over 5-30 s to supply superoleophilicity with keeping the superhydrophobic property on the surfaces. The modified cotton fabric having superoleophilic/superhydrophobic property was applicable to the separation membrane to separate oil and water. Interestingly, modified cotton fabric was found to adsorb efficiently only droplets of oil spread on the water interface due to its unique surface wettability.

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“…Antimicrobial and antiviral materials have been a growing field of interest for researchers due to increasing nosocomial infections and pathogenic microbial contaminations. Considerable effort has been devoted to developing surfaces with biocidal functions and self-disinfecting properties [1][2][3], as such modified surfaces could be incorporated into sterile garments and fabrics, thereby reducing the possibility of microbial and/or viral contamination.…”

Section: Introductionmentioning

confidence: 99%

Daylight-Active Cellulose Nanocrystals Containing Anthraquinone Structures

et al. 2020

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Antimicrobial and antiviral materials have attracted significant interest in recent years due to increasing occurrences of nosocomial infections and pathogenic microbial contamination. One method to address this is the combination of photoactive compounds that can produce reactive oxygen species (ROS), such as hydrogen peroxide and hydroxyl radicals to disinfect microbes, with carrier materials that meet the application requirements. Using anthraquinone (AQ) and cellulose nanocrystals (CNCs) as the photoactive and carrier components, respectively, this work demonstrated the first covalent incorporation of AQ onto CNCs. The morphology and the photoactive properties were investigated, revealing the structural integrity of the CNCs and the high degree of photoactivity of the AQ-CNC materials upon UVA exposure. The AQ-CNCs also exhibited an unexpected persistent generation of ROS under darkness, which adds advantages for antimicrobial applications.

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Fabrication of stable fluorine-free superhydrophobic fabrics for anti-adhesion and self-cleaning properties

Cited by 99 publications

References 72 publications

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

Designing Micro Bulge Structure with Uniform PS Microspheres for Boosted Dielectric Hydrophobic Blend Films

Fabrication of Cotton Fabric with Superoleophilic/Superhydrophobic Characteristic on the Modified Surface by Using Fluoroalkylated Oligomeric Silica/Triazine Derivative Nanocomposites

Daylight-Active Cellulose Nanocrystals Containing Anthraquinone Structures

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