Synthesis and characterization of a novel hydroxyl-terminated polydimethylsiloxane for application in the silicone-modified acrylic-grafted polyester resins

Mahmoudi, Masoud; Naghash, Hamid Javaherian

doi:10.1080/01694243.2015.1027476

Cited by 3 publications

(3 citation statements)

References 29 publications

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“…As shown in Figure 2b, the characteristic peaks at 2965 cm −1 (ν C−H), 1261 cm −1 (ν Si−CH 3 ), 1039/1097 cm −1 (ν Si−O−Si), and 806 cm −1 (ν Si−(CH 3 ) 2 ) on the QLS indicate the successful grafting of flexible polymer, i.e., polydimethylsiloxane. 41,42 Compared with bare and plasma-treated silicon, the QLS displays enhanced absorption peaks at 3725 cm −1 and 3000−3650 cm −1 , which correspond to the vibrations of Si− OH and O−H of adsorbed water molecules on the surface (inset in Figure 2b). 41,42 Repelling Liquids Regardless of Their Surface Tensions.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…41,42 Compared with bare and plasma-treated silicon, the QLS displays enhanced absorption peaks at 3725 cm −1 and 3000−3650 cm −1 , which correspond to the vibrations of Si− OH and O−H of adsorbed water molecules on the surface (inset in Figure 2b). 41,42 Repelling Liquids Regardless of Their Surface Tensions. The superior omniphobicity of the QLS with an ultralow CAH (Δθ ≤ 1.0°) is applicable to a broad range of polar or nonpolar liquids with surface tensions from 10.0 to 72.8 mN m −1 (Figure 3a and Table S4).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Passive Removal of Highly Wetting Liquids and Ice on Quasi-Liquid Surfaces

Zhang

Guo

Sarma

et al. 2020

ACS Appl. Mater. Interfaces

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Surfaces with ultralow adhesion to liquids and solids have attracted broad interests in both fundamental studies and engineering applications from passive removal of highly wetting liquids and water harvesting to anti-/de-icing. The current state-of-the-art superomniphobic surfaces (rely on air lubricant) and liquid-infused surfaces (rely on liquid lubricant) suffer from severe issues for liquid repellency and ice removal: air/liquid lubricant loss or topography damage. Here, we create a durable quasi-liquid surface by tethering flexible polymer on various solid substrates. The untethered end of the polymer has mobile chains that behave like a liquid layer and greatly reduce the interfacial adhesion between the surface and foreign liquids/solids. Such a quasi-liquid surface with a 30.1 nm flexible polymer layer shows ultralow contact angle hysteresis (≤1.0°) to liquids regardless of their surface tensions. The highly wetting perfluorinated liquids like FC72 and Krytox101, as well as complex fluids like urine and crude oil, can be repelled from the surface. Moreover, wind can remove accreted ice from the surface in harsh conditions due to the negligible ice adhesion. We have demonstrated that the quasi-liquid surface shows robust performances in repelling highly wetting liquids, harvesting water, and removing ice, respectively.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Passive Removal of Highly Wetting Liquids and Ice on Quasi-Liquid Surfaces

Zhang

Guo

Sarma

et al. 2020

ACS Appl. Mater. Interfaces

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“…Therefore, the addition of a certain amount of A172 can enhance the surface hydrophobicity of coatings to a certain extent. In the last decade, there are few studies on enhancing the hydrophobicity of polyurethane with silicon modification, and some data on hydrophobicity studies of polyurethane in the last decade at home and abroad were briefly listed in Figure 9 [ 12 , 18 , 20 , 25 , 30 , 31 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 ].…”

Section: Resultsmentioning

confidence: 99%

Preparation and Properties of Hydrophobic Polyurethane Based on Silane Modification

Zhang

et al. 2023

Polymers

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Waterborne coatings have obtained more and more attention from researchers with increasing concerns in environmental protection, and have the advantages of being green, environmentally friendly and safe. However, the introduction of hydrophilic groups leads to lower hydrophobicity and it is difficult to meet the requirements of complex application environments. Herein, we proposed an optimization approach of waterborne polyurethane (WPU) with vinyl tris(β-methoxyethoxy) silane (A172), and it was found that the surface roughness, mechanical properties, thermal stability and water resistance of WPU will be increased to a certain extent with the addition of A172. Moreover, the hydrophobicity of the coating film is best when the silicon content is 10% of the acrylic monomer mass and the water contact angle reaches 100°, which could exceed two-thirds of the research results in the last decade. Therefore, our study can provide some theoretical basis for the research of hydrophobic polyurethane coatings.

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