Recent developments and applications of protective silicone coatings: A review of PDMS functional materials

Eduok, Ubong; Faye, Omar; Szpunar, Jerzy A.

doi:10.1016/j.porgcoat.2017.05.012

Cited by 507 publications

(267 citation statements)

References 226 publications

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“…However, thermosetting polymers comprise a large fraction of the contemporary polymeric research and industrial applications. 20,21 One of the main advantages of thermosetting polymers is the possibility to start with a low viscosity liquid prior to curing, enabling facile processing and homogenous distribution. 22,23 This attribute can lead to highly cross-linked network after being fully cured within the same temperature ranges as typical CSPs; overtly introducing the possibility of a cold sintering mediated in situ polymer cross-linking process.…”

Section: Introductionmentioning

confidence: 99%

Thermosetting polymers in cold sintering: The fabrication of ZnO‐polydimethylsiloxane composites

et al. 2020

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This study reports the fabrication of the first ceramics‐thermosetting polymer composites by the cold sintering process, for high ceramic volume fractions (v/v >95%). The (1 − x) ZnO − x polydimethylsiloxane (PDMS) composites, with 0.00 ≤ x ≤ 0.05, were cold sintered at 250°C, 320 MPa for 60 minutes. In situ densification studies conducted with the help of a semi‐automated press revealed that the mechanisms driving the densification of the material changes with the polymer content. Relative densities of the (1 − x) ZnO − x PDMS composites (0.00 ≤ x ≤ 0.05) were above 90%. Impedance spectroscopy of the composites yields insight into the ceramic‐polymer interfaces within the sintered ZnO bulk and suggests long‐range conduction governed by ZnO‐PDMS interface properties for x = 0.03 and x = 0.05. The study also emphasizes on the complexities and opportunities of such ceramic‐dominated ceramic‐polymer composites.

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Section: Introductionmentioning

confidence: 99%

Thermosetting polymers in cold sintering: The fabrication of ZnO‐polydimethylsiloxane composites

et al. 2020

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“…In other words, the siloxane hydrophobes differ considerably from the traditional block organic polymers due to their weak intermolecular attractive forces. Structurally, they are characterized by (Abdel‐Raouf et al, ) SiOSi bond angles that are larger than COC bond angles (Adilbekova et al, ), SiO bond lengths that are longer than COC or CC bonds, (Ali et al, ) a greater freedom of rotation around the SiO bond compared to the CC bond, and (Ali et al, ) freely rotating methyl groups that can orient toward interfaces and also result in “free” volume for the siloxane hydrophobic chains (Eduok et al, ; Liu, ; Somasundaran et al, ). Therefore, all these characteristics give siloxane hydrophobes their comb‐like shape for diffusing easily in the crude oil.…”

Section: Resultsmentioning

confidence: 99%

Novel Star Polymeric Nonionic Surfactants as Crude Oil Emulsion Breakers

El-Sharaky

El-Tabey

Mishrif

2019

J Surfact & Detergents

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The principle focus of this work is to address the issues associated with the existence of water in crude oil, especially corrosion, scaling, viscosity, and catalyst suppression problems. This work aims to prepare star polymer nonionic surfactants based on (2Z,2′Z,2″Z)‐4,4′,4″‐((nitrilotris(ethane‐2,1‐diyl))tris(oxy))tris(4‐oxobut‐2‐enoic acid) to be used as demulsifiers. To achieve this aim, maleic anhydride was reacted with triethanolamine followed by esterification with the polyethylene oxide polypropylene oxide copolymer (PPO‐PEO 5000) and silicone polyether (ABIL B 8843). The chemical structure of the prepared compounds was assessed using gel permeation chromatography (GPC), Fourier transform infrared (FT‐IR), and 1H NMR. Demulsifier performance was determined by quantifying surface tension (ST), dynamic interfacial tension and interfacial rheology, partition coefficient (PC), and relative solubility number (RSN). The efficacy of the prepared emulsion breakers on asphaltenic crude oil emulsion was examined using the bottle test. The research results demonstrated that the prepared breaker based on the silicone polymer was more efficient in breaking the asphaltenic crude oil emulsion than a block copolymer and EO/PO‐based copolymers at 1500 ppm and after 120 min.

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“…Reflection occurring on the surface of a lens or an optical element can reduce the transmittance and downgrade the quality (e.g., contrast and clarity) of the optical images. Antireflection (AR) treatments are widely applied in various optical devices; from simple ones such as eyeglasses and sunglasses to complex ones such as optical components in microscopes, telescopes, watches, displays, and solar cells . There are commonly two means to eliminate surface reflection: (1) application of a coating with refractive index ( n ) and thickness ( h ) obeying h = λ /4 n , where λ is the wavelength of the incident beam, and (2) using multilayer coating stacks with appropriate refractive index and thickness combinations that provide destructive interference in the reflected beams and constructive interference in the transmitted beams.…”

Section: Introductionmentioning

confidence: 99%

Preparation of organic–inorganic hybridized dual‐functional antifog/antireflection coatings on plastic substrates

Chang

Lin

Cheng

2019

J of Applied Polymer Sci

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Dual‐functional antifog/antireflection coatings with a special bi‐layer structure for plastic substrates were prepared. The superhydrophilic top layer was a crosslinked network of dipentaerythritol hexaacrylate (DPHA), hydrophilic agent (synthesized from Tween 20, isophorone diisocyanate, 2‐hydroxyethyl methacrylate), and organically modified silica. The high‐refractive‐index bottom layer was composed of TiO2 nanoparticles and DPHA. The two layers were chemically bonded through a UV‐curing process. By tuning the thicknesses of the two layers, a series of coatings were prepared. These coatings were highly transparent and able to reduce reflectance. In addition, they adhered well to the substrate, and demonstrated superb antifogging capability on steam tests. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48822.

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Recent developments and applications of protective silicone coatings: A review of PDMS functional materials

Cited by 507 publications

References 226 publications

Thermosetting polymers in cold sintering: The fabrication of ZnO‐polydimethylsiloxane composites

Thermosetting polymers in cold sintering: The fabrication of ZnO‐polydimethylsiloxane composites

Novel Star Polymeric Nonionic Surfactants as Crude Oil Emulsion Breakers

Preparation of organic–inorganic hybridized dual‐functional antifog/antireflection coatings on plastic substrates

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