Hybrid silane coating reinforced with silanized graphene oxide nanosheets with improved corrosion protective performance

Ahmadi, A; Ramezanzadeh, Bahram; Mahdavian, M.

doi:10.1039/c6ra04843a

Cited by 131 publications

(58 citation statements)

References 45 publications

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“…These silane coupling agents consist of organosilanes, (R 1 , R 2 , R 3 )SiX n , where X substituents are hydrolysable to form RSi(OH) 3 when reacted with water, whereas the R groups are usually unreactive 18 . Different silane agents such as aminopropyltriethoxy silane (APTES) [19][20][21][22][23][24] , triethoxymethoxysilane (MTES), 3-glycidyloxypropyl trimethoxysilane (GPTMS) [25][26][27] and triethoxysilane (TEOS) [28][29][30] , have been widely explored and investigated for GO functionalization. However, to the best of our knowledge no studies have been reported that have focused on using vinyltrimethoxysilane (VTMOS) to modify reduced GO (rGO).…”

Section: Introductionmentioning

confidence: 99%

Facile silane functionalization of graphene oxide

et al. 2018

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The facile silane functionalization of graphene oxide (GO) was achieved yielding vinyltrimethoxysilane-reduced graphene oxide (VTMOS-rGO) nanospheres located in the inter-layer spacing between rGO sheets via an acid-base reaction using aqueous media. The successful grafting of the silane agent with pendant vinyl groups to rGO was confirmed by a combination of Fourier-transform infrared (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The structure and speciation of the silane-graphene network (nanosphere) and, the presence of free vinyl groups was verified from solid-state magic angle spinning (MAS) and solution 13C and 29Si nuclear magnetic resonance (NMR) measurements. Evidence from Scanning Electron Microscopy (SEM), High-Resolution Transmission Electron Microscopy (HRTEM) and TEM-High-Angle Annular Dark-Field (TEM-HAADF) imaging showed that these silane networks aided the exfoliation of the rGO layers preventing agglomeration, the interlayer spacing increased by 10 Å. The thermal stability (TGA/DTA) of VTMOS-rGO was significantly improved relative to GO, displaying just one degradation process for the silane network some 300 °C higher than either VTMOS or GO alone. The reduction of GO to VTMOS-rGO induced sp2 hybridization and enhanced the electrical conductivity of GO by 105 S m-1.

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Section: Introductionmentioning

confidence: 99%

Facile silane functionalization of graphene oxide

et al. 2018

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“…Ahmadi et al. showed Si–OH peak at the 953 cm −1 in their study, which related to the three‐dimensional silicate network. Figure b indicated the schematic representation of the interaction between starch and GPTMS.…”

Section: Resultsmentioning

confidence: 74%

Novel bioactive porous starch–siloxane matrix for bone regeneration: Physicochemical, mechanical, and in vitro properties

Aidun

Zamanian

Ghorbani

2018

Biotech and App Biochem

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So far, many studies have focused on biodegradable scaffolds for tissue engineering purposes. Herein, a starch-based biodegradable scaffold was fabricated by the freeze-drying method and cross-linked using a different concentration of 3-glycidoxypropyl-trimethoxysilane (GPTMS). Field emission scanning electron microscopy (FE-SEM) micrographs indicated an interconnected porous microstructure in which the porosity decreased as a function of starch and GPTMS content. Increasing the mechanical stability and decreasing absorption capacity and biodegradation ratio affected by the higher concentration of cross-linker and the changes in structure as a function of cross-linker enhancement. Moreover, the mineralization of hybrid structures in simulated body fluid was proved by FE-SEM image and X-ray diffraction analysis. Results indicated the more GPTMS in scaffolds led to more hydroxyapatite formation. The ability of the growth and proliferation of bone marrow mesenchyme stem cells on the constructs confirmed the ability of scaffolds for bone tissue engineering applications.

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“…The peaks at 1,268 and 872 cm −1 are assigned to the stretching vibration of COC groups. The peak at 1,625 cm −1 is connected to the CC groups of graphene skeleton . After modification with fluorosilane, the CO peak intensity is weakened and other peaks are occurred in the GOSiF spectra.…”

Section: Resultsmentioning

confidence: 96%

Synthesis and properties of fluorinated graphene oxide bisphenol a epoxy nanocomposites

Husamelden¹,

Fan

2019

Polymer Engineering & Sci

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This study thoroughly studied the implements of fluorosilane modified graphene oxide (GO) on the mechanical, thermal, and water absorption properties of the epoxy composites built up by specific content of modified GO. Fluorosilane graphene oxide (GOSiF) was analyzed using Fourier transform infrared spectroscopy, thermogravimetric analysis, Raman spectroscopy, X‐ray photoelectron spectroscopy, and X‐ray diffractometer. The epoxy composites tensile and bending modulus were increased by 11.46% and 62.25% with 0.1 and 0.5 wt% GOSiF loading, respectively. The good interfacial interaction was observed between epoxy matrix and GOSiF nanosheets under scanning electron microscopy. The thermal stability increases with GOSiF loading. Epoxy composite with 0.3 wt% GOSiF shows 5 °C increases in the T10%. The residual weight raised by 58.67% with 0.3 wt% GOSiF content. The water absorption study revealed small water uptake was obtained for all GOSiF composites. With 0.3 wt% loading of GOSiF, the maximum water content drops from 4.97% for neat epoxy to 1.98%. POLYM. ENG. SCI., 59:1250–1257 2019. © 2019 Society of Plastics Engineers

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Hybrid silane coating reinforced with silanized graphene oxide nanosheets with improved corrosion protective performance

Abstract: Enhancing the corrosion protection performance of steel substrate through utilizing a hybrid silane coating reinforced with silanized graphene oxide nanosheets.

Cited by 131 publications

References 45 publications

Facile silane functionalization of graphene oxide

Facile silane functionalization of graphene oxide

Novel bioactive porous starch–siloxane matrix for bone regeneration: Physicochemical, mechanical, and in vitro properties

Synthesis and properties of fluorinated graphene oxide bisphenol a epoxy nanocomposites

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