UV curable stimuli-responsive coatings with antifogging and oil-repellent performances

Xu, Jingyang; Lu, Pingli; Wang, Li; Ye, Fan; Tian, Weijun; Xu, Jianing; Zhao, Jie; Liu, Ren; Ming, Weihua

doi:10.1039/d1ta07934d

Cited by 27 publications

(10 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, antifogging materials including hydrophilic polymers containing hydroxy, amino, carboxylic acid, and ionic groups − or inorganic oxides such as silicon oxide (SiO 2 ) and titanium oxide (TiO 2 ) − have been studied to prevent fogging. The use of hydrophilic polymers such as poly(acrylic acid), poly(vinyl alcohol), and poly(ethylene glycol) offers a good method to prevent fogging because they effectively absorb water molecules via hydrogen bonding.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Amine Hydrochloride Salt on the Antifogging Properties of Amino-Functionalized Polysilsesquioxane

Hamada

Maeda

Sugimoto

et al. 2023

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

A poly [3-(2-aminoethylamino)propyl]silsesquioxane (PAEAPS) film was immersed in 0.5 mol/L hydrogen chloride (HCl) methanolic solution and a poly [3-(2aminoethylamino)propyl]silsesquioxane hydrochloride (PAEAPS-Cl) film containing the amine hydrochloride salt was prepared for the development of high-performance antifogging materials based on polysilsesquioxane. The PAEAPS-Cl film exhibited a higher water uptake (WU) of 29% and scratch resistance of 4.3 estimated by a nanoindenter than the PAEAPS film (WU = 22% and scratch resistance = 3.2). The introduction of the amine hydrochloride salt structure increased the antifogging properties and surface hardness. 29 Si solid-state nuclear magnetic resonance (NMR) spectra indicated that the structure of the siloxane network in the PAEAPS film drastically changed upon hydrolysis by amino groups after exposure to water vapor at 40 °C and 95% relative humidity for 1 h. In the PAEAPS-Cl film, the cleavage of the siloxane network was prevented by the introduction of the amine hydrochloride salt as the neutral group, but the amine hydrochloride salt sometimes induced the morphological change of the PAEAPS-Cl film because of strong hydration and cracks and dimples were observed after exposure to water vapor at 40 °C and 95% relative humidity for 1 h. The poly[3-(2-aminoethylamino)propyl-co-methyl]silsesquioxane hydrochloride (P(AEAP-co-Me)S-Cl) film was prepared by the hydrolysis and polycondensation of 3-(2-aminoethylaminopropyl)triethoxysilane and methyltriethoxysilane, followed by immersion in 0.5 mol/L HCl methanolic solution. The obtained P(AEAP-co-Me)S-Cl film exhibited a WU of 17%, lower than those of the PAEAPS and PAEAPS-Cl films, but cracks and dimples were not observed in the P(AEAP-co-Me)S-Cl film even after exposure to water vapor at 40 °C and 95% relative humidity for 1 h. Furthermore, the introduction of the amine hydrochloride salt structure did not decrease transparency and the PAEAPS-Cl and P(AEAP-co-Me)S-Cl films showed high transparency, similar to the PAEAPS film.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of the Amine Hydrochloride Salt on the Antifogging Properties of Amino-Functionalized Polysilsesquioxane

Hamada

Maeda

Sugimoto

et al. 2023

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

show abstract

“…To date, researchers have proposed many strategies to solve the fogging. − For example, transparent electrothermal films are widely used as defoggers. From the perspective of thermodynamics, the electrothermal film could evaporate small dewdrops through input voltage or Joule heat in a very short time .…”

Section: Introductionmentioning

confidence: 99%

Transparent UV-Cured Polyurethane–Surfactant Coatings with Antifogging Properties

Wang

Liu

et al. 2022

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Fogging on optical devices may severely impair vision, resulting in unacceptable adverse consequences. Transparent antifogging coatings play an important role in daily life, because they can effectively enhance transmission of light and meanwhile prevent water condensation considerably. Herein, highly transparent antifogging polyurethane coatings are designed and fabricated via a UV-assisted cross-linking method. Initially, isophorone diisocyanate, poly(ethylene glycol) (PEG), and 2,2′bis(hydroxymethyl)butyric acid (DMBA) were thermally polymerized to obtain a series of amphiphilic polyurethane prepolymers. Afterward, polyurethane prepolymers were end-capped by various surfactants (OP-x) and pentaerythritol triacrylate (PETA). Upon photoirradiation, the UV-cured polyurethane coatings with the cross-linking structure were obtained. Subsequently, the polyurethane coating has a hierarchical surface due to microphase separation. The wettability of coatings could be mainly attributed to the cooperative effect between the hierarchical surfaces and the hygroscopicity of the surfactant molecules. The polyurethane coating enables water to rapidly spread out, fulfilling the enhanced antifogging function (without forming water droplets). This antifogging material may find potential application in microdevices and engineering systems that operate in a cold or humid environment.

show abstract

“…On the other hand, for superhydrophobic surfaces, droplets nucleate within the surface micro/nanostructures under high-humidity conditions (>60% relative humidity (RH)), leading to a great reduction in the water droplet mobility, and hence, these droplets do not connect into a thin film of water and scatter light . Thus, there have been only a limited number of approaches for the preparation of superhydrophobic-type antifogging films/coatings. − Besides the superhydrophilic nature, water-absorbing/hygroscopic properties of materials also play a key role to realize long-lasting antifogging properties, preventing excess and inhomogeneous water condensation under harsh fogging conditions. − …”

Section: Introductionmentioning

confidence: 99%

“…Many efforts have thus far been made to prepare antifogging films/coatings. Various (super)hydrophilic/hygroscopic materials, including highly water-absorbent polymers, − ionic polymer brushes/monolayers, − hydrogels/organogels, − silica (SiO 2 ) and/or ultaviolet (UV) light-activated titanium dioxide (TiO 2 ) NPs/films, − and other inorganic nanomaterials, , are deposited on transparent organic/inorganic substrates by many means, including layer-by-layer (LbL) deposition, ,,,,,,,, spray-/spin-/dip-coatings, ,,,,− ,,, chemical vapor deposition (CVD), and so on. Among them, conventional approaches for the preparation of antifogging films/coatings relying on surface micro/nanostructures are complicated and time-consuming, and such textured films/coatings typically lack mechanical durability and self-healing abilities.…”

Section: Introductionmentioning

confidence: 99%

Transparent Composite Films Showing Durable Antifogging and Repeatable Self-Healing Properties Based on an Integral Blend Method

et al. 2022

View full text Add to dashboard Cite

Antifogging coatings for infrastructures and transparent objects have attracted much attention lately from the perspective of safety and visibility. We have developed a one-pot process to fabricate transparent composite films showing long-lasting antifogging and fast repeatable self-healing properties based on an integral blend (IB) method. This method does not require any specific pretreatments of inorganic fillers/particles. Thus, the precursor solutions could be prepared in a single step by simply mixing raw materials, e.g., poly(vinylpyrrolidone) (PVP) having different molecular weights (MWs: 55, 360, and 1300 k), nano-clay particles (NCPs), and aminoterminated organosilane (AOS). In this study, to control the degree of cross-linking between the PVP matrices and NCPs, addition of AOS as a cross-linker to the PVP matrices (weight percentage of AOS to the PVP matrices, α = 0.01−300%) was carefully controlled. Transparency and self-healing abilities/kinetics of the resulting samples were found to be strongly influenced by both the MWs of PVP and α values. Samples spin-coated with the lowest M W of PVP (55 k) and α values of 0.01−1% gave highly transparent and durable antifogging performance. For example, no fogging was observed for 7 days under >80% relative humidity, and scratches about 30 μm in width could be completely self-healed within a few hours. However, samples with α > 10% gave opaque/grayish films that did not show any self-healing abilities because of an increase in cross-linking of the matrices. The optimized precursor solution was also deposited directly onto the glass slides covered with a transparent porous silica nano-framework (SNF) by a spray-coating method. Due to the formation of the hard and superhydrophilic/hygroscopic SNF with a large surface area, durability of antifogging and self-healing properties of the composite films were moderately improved, compared to those on the flat glass slides.

show abstract

UV curable stimuli-responsive coatings with antifogging and oil-repellent performances

Abstract: A stimuli-responsive antifogging/oil-repellent coating with a delicate balance between hydrophilic and oleophobic components was prepared via a UV-assisted cross-linking method.

Cited by 27 publications

References 55 publications

Effect of the Amine Hydrochloride Salt on the Antifogging Properties of Amino-Functionalized Polysilsesquioxane

Effect of the Amine Hydrochloride Salt on the Antifogging Properties of Amino-Functionalized Polysilsesquioxane

Transparent UV-Cured Polyurethane–Surfactant Coatings with Antifogging Properties

Transparent Composite Films Showing Durable Antifogging and Repeatable Self-Healing Properties Based on an Integral Blend Method

Contact Info

Product

Resources

About