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Ysnaga OE, de Aguiar KMFR, Zamboni CB, Polito WL, Rodrigues-Filho UP. Qualitative and Semiquantitative Determination of the Atomic and Molecular Tungsten Distributions in Hybrid Hydroxyurethanes-Poly(dimethylsiloxane) Films Containing Phosphotungstates ([PW 12O 40] 3-). APPLIED SPECTROSCOPY 2020; 74:1515-1529. [PMID: 32638630 DOI: 10.1177/0003702820945018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, hybrid poly(dimethylsiloxane)-derived hydroxyurethanes films (PDMSUr-PWA) containing phosphotungstic acid (H3PW12O40/PWA) were characterized using field emission gun scanning electron microscopy (FEG-SEM), in attenuated total reflectance Fourier transform mid-infrared mode (ATR FT-MIR), and analyzed using synchrotron radiation micro-X-ray fluorescence (SR-μXRF), synchrotron radiation grazing incidence X-ray fluorescence (SR-GIXRF), laser-induced breakdown spectroscopy (LIBS), and instrumental neutron activation analysis (NAA) in order to correlate the distribution patterns of tungsten and properties of PDMSUr-PWA films. PDMS constitute elastomers with good mechanical, thermal, and chemical (hydrophobicity/non-hygroscopy) resistance. Currently, products based on urethanes (e.g., polyurethanes) are widely used in many applications as plastics, fiber-reinforced polymers, high-performance adhesives, corrosion-resistant coatings, photochromic films, among others. The possibility to combine inorganic and organic components can produce a hybrid material with unique properties. PWA has an important role as agent against the corrosion of steel surfaces in different media, besides exhibiting amazing catalytic and photochromic properties in these films. PWA kept its structure inside of these hybrid films through interactions between the organic matrix of PDMSUr and silanol from the inorganic part (organically modified silica), as was shown using ATR FT-MIR spectra. The FEG-SEM/SR-μXRF/wide-angle X-ray scattering (WAXS)/X-ray diffraction (XRD)/energy dispersive X-ray results proved the presence of PWA in the composition of domains of PDMSUr-PWA films. At PWA concentrations higher than 50 wt%/wt, tungsten segregation across the thickness is predominant, while that at PWA concentrations lower than 35 wt%/wt, tungsten segregation at surface is predominant. Inhomogeneities in the tungsten distribution patterns (at micrometric and millimetric level) may play an important role in the mechanical properties of these films (elastic modulus and hardness).
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Affiliation(s)
- Orlando Elguera Ysnaga
- Institute of Chemistry of São Carlos, University of São Paulo (IQSC-USP), São Carlos, Brazil
| | | | | | - Wagner Luiz Polito
- Institute of Chemistry of São Carlos, University of São Paulo (IQSC-USP), São Carlos, Brazil
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Roslan RA, Lau WJ, Lai GS, Zulhairun AK, Yeong YF, Ismail AF, Matsuura T. Impacts of Multilayer Hybrid Coating on PSF Hollow Fiber Membrane for Enhanced Gas Separation. MEMBRANES 2020; 10:membranes10110335. [PMID: 33187312 PMCID: PMC7696999 DOI: 10.3390/membranes10110335] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 11/02/2020] [Accepted: 11/08/2020] [Indexed: 11/16/2022]
Abstract
One of the most critical issues encountered by polymeric membranes for the gas separation process is the trade-off effect between gas permeability and selectivity. The aim of this work is to develop a simple yet effective coating technique to modify the surface properties of commonly used polysulfone (PSF) hollow fiber membranes to address the trade-off effect for CO2/CH4 and O2/N2 separation. In this study, multilayer coated PSF hollow fibers were fabricated by incorporating a graphene oxide (GO) nanosheet into the selective coating layer made of polyether block amide (Pebax). In order to prevent the penetration of Pebax coating solution into the membrane substrate, a gutter layer of polydimethylsiloxane (PDMS) was formed between the substrate and Pebax layer. The impacts of GO loadings (0.0–1.0 wt%) on the Pebax layer properties and the membrane performances were then investigated. XPS data clearly showed the existence of GO in the membrane selective layer, and the higher the amount of GO incorporated the greater the sp2 hybridization state of carbon detected. In terms of coating layer morphology, increasing the GO amount only affected the membrane surface roughness without altering the entire coating layer thickness. Our findings indicated that the addition of 0.8 wt% GO into the Pebax coating layer could produce the best performing multilayer coated membrane, showing 56.1% and 20.9% enhancements in the CO2/CH4 and O2/N2 gas pair selectivities, respectively, in comparison to the membrane without GO incorporation. The improvement is due to the increased tortuous path in the selective layer, which created a higher resistance to the larger gas molecules (CH4 and N2) compared to the smaller gas molecules (CO2 and O2). The best performing membrane also demonstrated a lower degree of plasticization and a very stable performance over the entire 50-h operation, recording CO2/CH4 and O2/N2 gas pair selectivities of 52.57 (CO2 permeance: 28.08 GPU) and 8.05 (O2 permeance: 5.32 GPU), respectively.
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Affiliation(s)
- Rosyiela Azwa Roslan
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (R.A.R.); (G.S.L.); (A.K.Z.); (A.F.I.)
- School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia
| | - Woei Jye Lau
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (R.A.R.); (G.S.L.); (A.K.Z.); (A.F.I.)
- School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia
- Correspondence: (W.J.L.); (T.M.)
| | - Gwo Sung Lai
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (R.A.R.); (G.S.L.); (A.K.Z.); (A.F.I.)
| | - Abdul Karim Zulhairun
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (R.A.R.); (G.S.L.); (A.K.Z.); (A.F.I.)
- School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai 81310, Malaysia
| | - Yin Fong Yeong
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia;
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (R.A.R.); (G.S.L.); (A.K.Z.); (A.F.I.)
| | - Takeshi Matsuura
- Department of Chemical Engineering, Industrial Membrane Research Institute, University of Ottawa, 161 Louis Pasteur Street, P.O. Box 450, Station A, Ottawa, ON K1N 6N5, Canada
- Correspondence: (W.J.L.); (T.M.)
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Ecochard Y, Leroux J, Boutevin B, Auvergne R, Caillol S. From multi-functional siloxane-based cyclic carbonates to hybrid polyhydroxyurethane thermosets. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109280] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Liang H, Gao Q. Synthesis and properties of Non-isocyanate polyurethane Based on Aromatic amine. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1757-899x/612/2/022030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Błażek K, Datta J, Cichoracka A. Sustainable synthesis of cyclic carbonates from bio‐based polyether polyol: the structure characterization, rheological behaviour and thermal properties. POLYM INT 2019. [DOI: 10.1002/pi.5908] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kamila Błażek
- Faculty of Chemistry, Department of Polymers TechnologyGdansk University of Technology Gdańsk Poland
| | - Janusz Datta
- Faculty of Chemistry, Department of Polymers TechnologyGdansk University of Technology Gdańsk Poland
| | - Alicja Cichoracka
- Faculty of Chemistry, Department of Polymers TechnologyGdansk University of Technology Gdańsk Poland
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Sukumaran Nair A, Cherian S, Balachandran N, Panicker UG, Kalamblayil Sankaranarayanan SK. Hybrid Poly(hydroxy urethane)s: Folded-Sheet Morphology and Thermoreversible Adhesion. ACS OMEGA 2019; 4:13042-13051. [PMID: 31460431 PMCID: PMC6705089 DOI: 10.1021/acsomega.9b00789] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 07/29/2019] [Indexed: 05/02/2023]
Abstract
Hybrid poly(hydroxy urethane)s (PHUs) are synthesized by copolymerizing aromatic/alicyclic cyclic carbonates with a polyether amine via addition polymerization. They result into polymers with an average molecular weight of 10 kDa and exhibit solubility in common organic solvents. The hybrid PHUs display T g up to 18 °C. PHUs are enriched with multiple H-bonded interactions and they are assessed using temperature-dependent 1H NMR and Fourier-transform infrared studies. PHUs possess folded-sheet morphology with nanogap between folds and nanowidth between chains. The secondary interactions bestow thermoreversible property to PHUs, and they display good adhesion to both polar (Al-Al) and nonpolar (HDPE-HDPE) substrates. Hybrid PHUs show improved optical transparency compared to homo PHUs. The PHUs are thermally stable up to 250 °C.
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Affiliation(s)
- Anitha Sukumaran Nair
- Polymers
and Special Chemicals Group and Analytical, Spectroscopy and Ceramics
Group, Vikram Sarabhai Space Centre, Thiruvananthapuram 695022, India
| | - Suchithra Cherian
- Polymers
and Special Chemicals Group and Analytical, Spectroscopy and Ceramics
Group, Vikram Sarabhai Space Centre, Thiruvananthapuram 695022, India
| | - Nisha Balachandran
- Polymers
and Special Chemicals Group and Analytical, Spectroscopy and Ceramics
Group, Vikram Sarabhai Space Centre, Thiruvananthapuram 695022, India
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Yadav N, Seidi F, Del Gobbo S, D'Elia V, Crespy D. Versatile functionalization of polymer nanoparticles with carbonate groups via hydroxyurethane linkages. Polym Chem 2019. [DOI: 10.1039/c9py00597h] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Synthesis of polymer nanoparticles bearing pendant cyclic carbonate moieties is carried out to explore their potential as versatile supports for biomedical applications and catalysis.
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Affiliation(s)
- Neha Yadav
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong 21210
- Thailand
| | - Farzad Seidi
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong 21210
- Thailand
| | - Silvano Del Gobbo
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong 21210
- Thailand
| | - Valerio D'Elia
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong 21210
- Thailand
| | - Daniel Crespy
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong 21210
- Thailand
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Zhou J, Lin PT. Midinfrared Multispectral Detection for Real-Time and Noninvasive Analysis of the Structure and Composition of Materials. ACS Sens 2018; 3:1322-1328. [PMID: 29972640 DOI: 10.1021/acssensors.8b00222] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In situ material identification and object tracking have been demonstrated using a mid-infrared (mid-IR) robotic scanning system. This detection method is capable of inspecting materials noninvasively because the mid-IR spectrum overlaps with numerous characteristic absorption bands corresponding to various chemical function groups. The scanning system consisted of a fiber probe connected to a mid-IR tunable laser with a wavelength tuning range of λ = 2.45-3.75 μm. For the high-speed performance of the scanning system to be evaluated, a testing platform was constructed with an object plate rapidly rotating at ω = 231 rpm. The objects on the plate were SU-8 epoxy-based resin and polydimethylsiloxane, which were mid-IR absorptive while visibly transparent. Applying mid-IR multispectral scanning, the system was able to simultaneously track the object position and identify the composition by interpreting the spectral and spatial intensity variation. The mid-IR robotic scanning method thus provides a visualization system critical for process inspection in automatic manufacturing and high-throughput biomedical screening.
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Filipecka K, Budaj M, Chamerski K, Miedziński R, Sitarz M, Miskowiak B, Makowska-Janusik M, Filipecki J. PALS, MIR and UV–vis–NIR spectroscopy studies of pHEMA hydrogel, silicon- and fluoro-containing contact lens materials. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.07.082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chamerski K, Lesniak M, Sitarz M, Stopa M, Filipecki J. An investigation of the effect of silicone oil on polymer intraocular lenses by means of PALS, FT-IR and Raman spectroscopies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 167:96-100. [PMID: 27261889 DOI: 10.1016/j.saa.2016.05.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 05/22/2016] [Indexed: 06/05/2023]
Abstract
The effect of the polydimethylsiloxane (PDMS) based silicone oil, that is widely used in vitreoretinal surgery, on internal structures of the polymer intraocular lenses was investigated. The effect of PDMS was studied on the polymethyl methacrylate (PMMA) rigid lenses and poly(2-hydroxyethyl methacrylate) (PHEMA) flexible lenses. The research was carried out by means of the positron lifetime spectroscopy (PALS) as well as the infrared spectroscopy (FT-IR) and the Raman spectroscopy (RS). The studies involving the use of PALS and FT-IR methods have revealed that the PHEMA based lenses absorbed, whereas the PMMA lenses did not absorb, silicone oil. The results obtained with the use of the RS method were inconclusive, probably due to the too low intensity of the characteristic PDMS bands. The evidence from this study was discussed in terms of physics and related to the clinical use of both silicone oil and intraocular lenses.
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Affiliation(s)
- Kordian Chamerski
- Jan Dlugosz University, Faculty of Mathematics and Natural Science, Institute of Physics, Al. Armii Krajowej 13/15, 42-200 Czestochowa, Poland
| | - Magdalena Lesniak
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Cracow, Poland
| | - Maciej Sitarz
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Cracow, Poland
| | - Marcin Stopa
- Department of Optometry and Biology of Visual System, Poznan University of Medical Sciences, ul. Rokietnicka 5D, 60-806 Poznań, Poland; Clinical Eye Unit and Pediatric Ophthalmology Service, Heliodor Swiecicki University Hospital, Poznan University of Medical Sciences, Poznań, Poland
| | - Jacek Filipecki
- Jan Dlugosz University, Faculty of Mathematics and Natural Science, Institute of Physics, Al. Armii Krajowej 13/15, 42-200 Czestochowa, Poland.
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Yilbas BS, Yousaf MR, Ali H, Al-Aqeeli N. Replication of laser-textured alumina surfaces by polydimethylsiloxane: Improvement of surface hydrophobicity. J Appl Polym Sci 2016. [DOI: 10.1002/app.44015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Bekir Sami Yilbas
- Center of Research Excellence in Renewable Energy; KFUPM; Dhahran 31261 Saudi Arabia
- ME Department; KFUPM; Dhahran 31261 Saudi Arabia
| | | | - H. Ali
- ME Department; KFUPM; Dhahran 31261 Saudi Arabia
| | - N. Al-Aqeeli
- ME Department; KFUPM; Dhahran 31261 Saudi Arabia
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Pigaleva MA, Elmanovich IV, Temnikov MN, Gallyamov MO, Muzafarov AM. Organosilicon compounds in supercritical carbon dioxide: Synthesis, polymerization, modification, and production of new materials. POLYMER SCIENCE SERIES B 2016. [DOI: 10.1134/s1560090416030118] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yilbas BS, Ali H, Al-Aqeeli N, Khaled M, Abu-Dheir N, Varanasi KK. Solvent-induced crystallization of a polycarbonate surface and texture copying by polydimethylsiloxane for improved surface hydrophobicity. J Appl Polym Sci 2016. [DOI: 10.1002/app.43467] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- B. S. Yilbas
- Mechanical Engineering Department and Excellence in Renewable Energy; King Fahd University of Petroleum and Minerals; Dhahran 31261 Saudi Arabia
| | - H. Ali
- Mechanical Engineering Department; King Fahd University of Petroleum and Minerals; Dhahran 31261 Saudi Arabia
| | - N. Al-Aqeeli
- Mechanical Engineering Department; King Fahd University of Petroleum and Minerals; Dhahran 31261 Saudi Arabia
| | - M. Khaled
- Chemistry Department; King Fahd University of Petroleum and Minerals; Dhahran 31261 Saudi Arabia
| | - N. Abu-Dheir
- Mechanical Engineering Department; King Fahd University of Petroleum and Minerals; Dhahran 31261 Saudi Arabia
| | - K. K. Varanasi
- Mechanical Engineering; Massachusetts Institute of Technology; Boston Massachusetts
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Rossi de Aguiar KMF, Ferreira-Neto EP, Blunk S, Schneider JF, Picon CA, Lepienski CM, Rischka K, Rodrigues-Filho UP. Hybrid urethanesil coatings for inorganic surfaces produced by isocyanate-free and sol–gel routes: synthesis and characterization. RSC Adv 2016. [DOI: 10.1039/c5ra24331a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel hybrid poly(dimethylsiloxane) urethanesils produced by CO2 fixation present multifunctional properties for metallic and inorganic surfaces.
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Affiliation(s)
| | | | - S. Blunk
- Department of Physics
- Federal University of Paraná
- Curitiba
- Brazil
| | - J. F. Schneider
- Institute of Physics of São Carlos
- University of São Paulo
- São Carlos
- Brazil
| | - C. A. Picon
- Engineering Faculty
- State University Julio de Mesquita Filho
- Ilha Solteira
- Brazil
| | - C. M. Lepienski
- Department of Physics
- Federal University of Paraná
- Curitiba
- Brazil
| | - K. Rischka
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM
- Bremen
- Germany
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Rossi de Aguiar KMF, Specht U, Maass JF, Salz D, Picon CA, Noeske PLM, Rischka K, Rodrigues-Filho UP. Surface modification by physical treatments on biomedical grade metals to improve adhesion for bonding hybrid non-isocyanate urethanes. RSC Adv 2016. [DOI: 10.1039/c6ra05397a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work aims to improve the adhesion of a hybrid non-isocyanate polydimethylsiloxane urethane (PDMSUr) coating by producing active layers on titanium alloy (Ti6Al4V) and stainless steel (SS316L) applying pulsed Nd:YAG laser and oxygen plasma.
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Affiliation(s)
| | - U. Specht
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM
- Bremen
- Germany
| | - J. F. Maass
- Pontifical Catholic University of Rio Grande do Sul
- Porto Alegre
- Brazil
| | - D. Salz
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM
- Bremen
- Germany
| | - C. A. Picon
- Engineering Faculty
- State University Julio de Mesquita Filho
- Ilha Solteira
- Brazil
| | - P.-L. M. Noeske
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM
- Bremen
- Germany
| | - K. Rischka
- Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM
- Bremen
- Germany
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Nine MJ, Cole MA, Johnson L, Tran DNH, Losic D. Robust Superhydrophobic Graphene-Based Composite Coatings with Self-Cleaning and Corrosion Barrier Properties. ACS APPLIED MATERIALS & INTERFACES 2015; 7:28482-28493. [PMID: 26632960 DOI: 10.1021/acsami.5b09611] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Superhydrophobic surfaces for self-cleaning applications often suffer from mechanical instability and do not function well after abrasion/scratching. To address this problem, we present a method to prepare graphene-based superhydrophobic composite coatings with robust mechanical strength, self-cleaning, and barrier properties. A suspension has been formulated that contains a mixture of reduced graphene oxide (rGO) and diatomaceous earth (DE) modified with polydimethylsiloxane (PDMS) that can be applied on any surface using common coating methods such as spraying, brush painting, and dip coating. Inclusion of TiO2 nanoparticles to the formulation shows further increase in water contact angle (WCA) from 159 ± 2° to 170 ± 2° due to the structural improvement with hierarchical surface roughness. Mechanical stability and durability of the coatings has been achieved by using a commercial adhesive to bond the superhydrophobic "paint" to various substrates. Excellent retention of superhydrophobicity was observed even after sandpaper abrasion and crosscut scratching. A potentiodynamic polarization study revealed excellent corrosion resistance (96.78%) properties, and an acid was used to provide further insight into coating barrier properties. The ease of application and remarkable properties of this graphene-based composite coating show considerable potential for broad application as a self-cleaning and protective layer.
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Affiliation(s)
- Md J Nine
- School of Chemical Engineering, The University of Adelaide , Adelaide, SA 5005, Australia
| | - Martin A Cole
- School of Chemical Engineering, The University of Adelaide , Adelaide, SA 5005, Australia
| | - Lucas Johnson
- School of Chemical Engineering, The University of Adelaide , Adelaide, SA 5005, Australia
| | - Diana N H Tran
- School of Chemical Engineering, The University of Adelaide , Adelaide, SA 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide , Adelaide, SA 5005, Australia
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