Anti-Fogging/Self-Healing Properties of Clay-Containing Transparent Nanocomposite Thin Films

England, Matt W.; Urata, Chihiro; Dunderdale, Gary J.; Hozumi, Atsushi

doi:10.1021/acsami.5b11961

Cited by 110 publications

(120 citation statements)

References 31 publications

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“…This may lead to many problems for the use of eyeglasses, windows, mirrors, goggles, and optical instruments. [1][2][3][4] Over the last few decades, an extensive research studies have been reported to prevent the formation of fog and frost on solid surfaces by different approaches including superhydrophobic coatings, 5-7 superhydrophilic coatings 8,9 and combinations of both hydrophilic and hydrophobic properties in the coating. [10][11][12][13][14][15] Hydrophilic surfaces that have a water contact angle of less than 5 o exhibit excellent anti-fog properties because they allow water droplets to spread uniformly to form a thin water film, which reduces light scattering.…”

Section: Introductionmentioning

confidence: 99%

“…[10][11][12][13][14][15] Hydrophilic surfaces that have a water contact angle of less than 5 o exhibit excellent anti-fog properties because they allow water droplets to spread uniformly to form a thin water film, which reduces light scattering. 9,16,17 In general, superhydrophilicity can be obtained by various chemical and physical methods. 18 One common approach is to coat hydrophilic inorganic nanoparticles such as SiO2 and TiO2.…”

Section: Introductionmentioning

confidence: 99%

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Zwitterionic polymer brush coatings with excellent anti-fog and anti-frost properties

Ezzat

Huang

2016

RSC Adv.

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The formation of fog and frost on transparent surfaces can lead to many problems in our daily life. To address these problems, polymer brushes based on two zwitterionic analogues, poly(sulfobetaine methacrylate) (pSBMA) and poly(sulfobetaine vinylimidazole) (pSBVI), have been prepared by surface-initiated atom transfer radical polymerization (SI-ATRP). Hydrophilic and superhydrophilic pSBMA and pSBVI polymer brushes were prepared by controlling the thickness of the coatings to study the effect of wettability on the anti-fog and anti-frost properties. X-ray photoelectron spectroscopy (XPS), ellipsometry and atomic force microscopy (AFM) were respectively used to determine the interfacial elemental composition, the thickness and the morphology of the brushes. The wettability of the polymer brushes was measured using a water contact angle goniometer. Their anti-fog and anti-frost capabilities were determined visually and tested quantitatively by UV-vis spectroscopy. The results indicated that the optical transmittance of substrates modified with superhydrophilic polymer coatings under both hot and cold fogging conditions was very high. Additionally, no visible frost was formed on the superhydrophilic substrates after storage in a freezer at -20 o C for the duration of the experiment. These results convincingly demonstrated that the resistance of the modified substrates to fogging and frosting is strongly correlated to the surface wettability. Moreover, there is no considerable difference in the performance of pSBMA and pSBVI polymer brushes, but the former is preferred because SBMA monomer is commercially available and requires short polymerization time to obtain superhydrophilicity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zwitterionic polymer brush coatings with excellent anti-fog and anti-frost properties

Ezzat

Huang

2016

RSC Adv.

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“…Self‐healing/healable materials with extended service life and enhanced reliability can significantly reduce raw material consumption and contribute in the realization of a sustainable society . Currently, endowing artificial materials with healing function is becoming an important consideration in material design.…”

Section: Summary Of Mechanical Properties Of the Paa–pvpon Compositesmentioning

confidence: 99%

Healable and Mechanically Super‐Strong Polymeric Composites Derived from Hydrogen‐Bonded Polymeric Complexes

et al. 2019

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of damaging−healing process in a given region without concern about depletion of healing agents. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] However, the fabrication of intrinsic self-healing/healable polymer materials with strong mechanical strength remains a great challenge because the diffusion of polymer chains, which is the prerequisite for the healing function, is largely hindered. [3,5,16] By using dense thiourea hydrogen bonds as reversible cross-linkers, Aida and coworkers have fabricated self-healing poly(ether-thioureas) with a tensile stress of 45 ± 8 MPa and an elastic modulus of 1.4 GPa. [3] The poly(ether-thioureas) is by far the mechanically strongest polymers capable of healing physical damage at room temperature. Unlike conventional polymers based on covalent bonds, supramolecular polymers are constructed from monomeric units that are connected through noncovalent interactions such as hydrogen bonding, host-guest interactions, metal coordination, π-π stacking interactions, and so forth. [10,[17][18][19][20][21][22][23] The dynamic nature of noncovalent interactions endows supramolecular polymers with various unique properties such as stimulus response, [23,24] self-healing, [10,22,25,26] and recycling abilities. [27,28] On account of dynamic and weak nature of noncovalent interactions among monomeric units, the molecular weight of supramolecular polymers is usually low and the entanglement of short polymer chains is severely limited. [17,20] Therefore, most supramolecular polymers are soft and are unsuitable for the fabrication of self-healing/healable polymer materials with high mechanical strength.Polymeric complexes can be produced by mixing polymers with complementary noncovalent interactions in bulk solution or sequentially at interface of solid substrates and polymer solutions. [5,16,[29][30][31][32][33][34][35][36][37] Given that various polymers bearing complementary interactions can be employed to prepare polymeric complexes, polymeric composite materials based on polymeric complexes can possess various compositions, controllable cross-linking density, and well-tailored mechanical properties. [31,33,35,[37][38][39] During the formation of polymeric complexes, polymers with self-assembly ability can generate welldesigned micro-/nanosized structures, which provide a facile way to further tailor the mechanical properties of the resultant materials. [29] Similar to supramolecular polymers, the reversible noncovalent interaction among polymer chains can also It is challenging to fabricate mechanically super-strong polymer composites with excellent healing capacity because of the significantly limited mobility of polymer chains. The fabrication of mechanically super-strong polymer composites with excellent healing capacity by complexing polyacrylic acid (PAA) with polyvinylpyrrolidone (PVPON) in aqueous solution followed by molding into desired shapes is presented. The coiled PVPON can complex with PAA in water via hydrogen-bonding interactions to produce transparent PAA-PVPON compos...

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“…The wetting behavior of solid and liquid surfaces has been studied extensively. Superhydrophilic surfaces (whose water droplet contact angle is <5° within 0.5 s) have attracted considerable attention due to their special properties and their broad range of applications in self‐cleaning, anti‐fogging, anti‐fouling, oil–water separation, anticorrosion, fog collection, and organic solar cells . To prepare superhydrophilic surfaces, a lot of effort has been devoted using different strategies, including TiO 2 ‐based coatings, etching, hydrothermal treatment and layer‐by‐layer assembly .…”

Section: Introductionmentioning

confidence: 99%

“…The wetting behavior of solid and liquid surfaces has been studied extensively. Superhydrophilic surfaces (whose water droplet contact angle is <5° within 0.5 s) have attracted considerable attention due to their special properties and their broad range of applications in self-cleaning, [1,2] anti-fogging, [3,4] anti-fouling, [5,6] oil-water separation, [7,8] anticorrosion, [9] fog www.advancedsciencenews.com www.mme-journal.de…”

Section: Introductionmentioning

confidence: 99%

Transparent Surfactant/Epoxy Composite Coatings with Self‐Healing and Superhydrophilic Properties

Tan

et al. 2019

Macro Materials & Eng

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In this paper, highly transparent, robust, and superhydrophilic polyethylene glycol tert‐octylphenyl ether nonionic surfactant/epoxy (Triton X‐100/epoxy, TXE) composite coatings are successfully prepared with a facile, one‐step drop‐casting method by mixing Triton X‐100 with an epoxy resin and an amine curing agent. The hydrogen bond reaction between the hydroxyl group of Triton X‐100 and the ether group of the epoxy resin improves the compatibility and reduces the glass transition temperature (Tg) of the TXE composite coatings. The free Triton X‐100 surfactant easily accumulates on the surface of the TXE composite coatings, which improves the hydrophilicity of the TXE composite coatings. The TXE composite coatings are self‐healable because of their low Tg and the migration of Triton X‐100 small molecule surfactant. Any damage arising from denting, cutting, or wiping by tetrahydrofuran can be healed, and the composite coating can regain its superhydrophilic properties through a heating process. The TXE composite coatings demonstrate excellent acid, alkali, salt, high temperature, and ultrasonic‐resistant properties. This facile preparation technique has the potential to be applied in the scalable fabrication of multifunctional coatings in anti‐fogging, oil–water separation, and optical–electric devices.

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Anti-Fogging/Self-Healing Properties of Clay-Containing Transparent Nanocomposite Thin Films

Cited by 110 publications

References 31 publications

Zwitterionic polymer brush coatings with excellent anti-fog and anti-frost properties

Zwitterionic polymer brush coatings with excellent anti-fog and anti-frost properties

Healable and Mechanically Super‐Strong Polymeric Composites Derived from Hydrogen‐Bonded Polymeric Complexes

Transparent Surfactant/Epoxy Composite Coatings with Self‐Healing and Superhydrophilic Properties

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