Toward Superhydrophobic Polydimethylsiloxane−Silica Particle Coatings

Ejenstam, Lina; Swerin, Agne; Claesson, Per M.

doi:10.1080/01932691.2015.1101610

Cited by 13 publications

(9 citation statements)

References 33 publications

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“…However, the fumed‐silica filler suffers from agglomeration and creates the filler networks in the polymer, thus causing defects in the membrane. In addition, the mechanical stability of the HFMMMs was not enhanced by fumed silica .…”

Section: Performances Of Hfmmms In Co2/n2and Co2/ch4separationmentioning

confidence: 98%

Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO₂Separation from N₂and CH₄

et al. 2017

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To control CO 2 emission from industries, membrane technology is preferred over conventional technologies due to its numerous advantages including reliability, operational simplicity, and low capital cost. Hollow-fiber mixed-matrix membranes (HFMMMs) exhibit great potential for CO 2 separation. Various inorganic fillers were incorporated into different types of polymeric materials for fabrication of HFMMMs. This review focuses on the performance and issues of HFMMMS based on various materials for CO 2 /CH 4 and CO 2 /N 2 separation. Major features are reflected in the following three aspects: comprehensive study on the performance of HFMMMs for CO 2 /N 2 and CO 2 /CH 4 separation, issues with the fabrication of HFMMMs in CO 2 /N 2 and CO 2 /CH 4 separation, and prediction of transport models for HFMMMs in gas separation.

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Section: Performances Of Hfmmms In Co2/n2and Co2/ch4separationmentioning

confidence: 98%

Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO₂Separation from N₂and CH₄

et al. 2017

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“…The wetting behavior of ZnO-C/PDMS and ZnO-nt/ PDMS can be explained by the Wenzel and Cassie-Baxter state, respectively [46]. In the Wenzel state, water droplets are entrapped in the voids and pinned tightly on the rough surface, while in the Cassie-Baxter state, the water droplets are suspended on the top asperities of the rough surface due to entrapped air cushions in the cavities.…”

Section: Surface Roughness Andmentioning

confidence: 99%

Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Basiron

Sreekantan

Saharudin

et al. 2018

Journal of Nanomaterials

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In this present work, a superhydrophobic glass surface comprising zinc oxide nanotriangles (ZnO-nt) and nontoxic silylating agent was developed via a cost-effective spray-coating technology. ZnO-nt was synthesized by a hydrothermal method. Poly(dimethylsiloxane) (PDMS) and dimethyldiethoxysilane (DMDEOS) were used as nontoxic (nonfluoro) silylating agents. The morphology and crystallinity of ZnO-nt were studied using X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. ZnO-nt with polymeric silane (PDMS) exhibited maximum wettability as compared to nonpolymeric silane (DMDEOS). The water contact angle (WCA), sliding angle (SA), and surface roughness of ZnO-nt/PDMS-coated glass substrate under UV treatment were 165 ± 1°, 3 ± 1°, and 791 nm, respectively. The WCA of ZnO-nt/PDMS was higher (165°) than that of commercial ZnO/PDMS (ZnO-C/PDMS). ZnO-nt/PDMS was strongly attached to the glass substrate with good stability and adhesion. The reasons for improved hydrophobicity, adhesion, and mechanism of hierarchical microstructure formation on the glass substrate were explained in detail. PDMS was attached to the glass substrate via hydrogen bonds from solvated zinc acetate.

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“…They also reported that lower concentrations also improve transparency. 40 Polydimethylsiloxane (PDMS) has often been used as the polymer of choice for superhydrophobic coatings [41][42][43][44] because of its hydrophobic nature as well as transparency when cured even at large thicknesses due to homogenous nature of the polymer. However, due to the minimal interacting sites the polymer has poor adhesive properties to glass, often requiring additional treatment of glass with plasma or chemical activation to increase hydroxylation.…”

Section: Introductionmentioning

confidence: 99%

Fluorine-Free Transparent Superhydrophobic Nanocomposite Coatings from Mesoporous Silica

Janowicz

Heale

et al. 2020

Langmuir

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In recent decades, there has been a growing interest in the development of functional, fluorine-free superhydrophobic surfaces with improved adhesion for better applicability into real-world problems. Here we compare two different methods, spin coating and aerosol assisted chemical vapor deposition (AACVD), for the synthesis of transparent fluorine-free superhydrophobic coatings. The material was made from a nanocomposite of (3-aminopropyl)triethoxysilane (APTES) functional mesoporous silica nanoparticles and titanium crosslinked polydimethylsiloxane with particle concentrations between 9 wt% to 50 wt%. The silane that was used to lower the surface energy consisted of a long hydrocarbon chain without fluorine groups to reduce the environmental impact of the composite coating. Both spin coating and AACVD resulted in the formation of superhydrophobic surfaces with advancing contact angles up to 168°, a hysteresis of 3° and a transparency of 90% at 550 nm. AACVD has proven to produce more uniform coatings with concentrations as low as 9 wt% reaching superhydrophobicity. The metal oxide crosslinking improves the adhesion of the coating to the glass. Overall, AACVD was the more optimal method to prepare superhydrophobic coatings compared to spin coating due to higher contact angles, adhesion and scalability of the fabrication process.

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Toward Superhydrophobic Polydimethylsiloxane−Silica Particle Coatings

Cited by 13 publications

References 33 publications

Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO₂Separation from N₂and CH₄

Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO₂Separation from N₂and CH₄

Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Fluorine-Free Transparent Superhydrophobic Nanocomposite Coatings from Mesoporous Silica

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Toward Superhydrophobic Polydimethylsiloxane−Silica Particle Coatings

Cited by 13 publications

References 33 publications

Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO2Separation from N2and CH4

Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO2Separation from N2and CH4

Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Fluorine-Free Transparent Superhydrophobic Nanocomposite Coatings from Mesoporous Silica

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Product

Resources

About

Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO₂Separation from N₂and CH₄

Issues and Current Trends of Hollow‐Fiber Mixed‐Matrix Membranes for CO₂Separation from N₂and CH₄