Surface Modification of Zinc Oxide by 3-aminopropyltiethoxysilane and a Comparative Study of Effect of Corrosion on Carbon Steel With Epoxy Containing Graphene Oxide-Zinc Oxide (GO-ZnO) Hybrids
| Autor: | Othman Nurul Husna, Che Ismail Mokhtar, Mustapha Mazli |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Carbon steel Graphene Oxide chemistry.chemical_element Epoxy Zinc engineering.material law.invention Corrosion chemistry.chemical_compound Chemical engineering chemistry lcsh:TA1-2040 law visual_art engineering visual_art.visual_art_medium Surface modification Oxide zinc lcsh:Engineering (General). Civil engineering (General) |
| Zdroj: | MATEC Web of Conferences, Vol 225, p 01002 (2018) |
| ISSN: | 2261-236X |
| DOI: | 10.1051/matecconf/201822501002 |
| Popis: | The use of coupling agent, 3-aminopropyltiethoxysilane (APTES) in the silanization reaction with metal oxides plays an important role to ensure that additional chemical modification can successfully be achieved. Studies have shown that introducing metal oxides onto graphene oxide sheets can improve the dispersion of sheets in a polymeric matrix, contributing to its excellent anti-corrosion properties. Hence, two methods of APTES attachment has been explored, where the first method utilizes a reflux process to introduce siloxane bonds to the ZnO NP surface; the latter usesuse of ultrasonication to stimulate the functionalization of ZnO NPs. Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) were employed to characterize the APTES-Functionalized ZnO and the precipitation on the surface of GO sheets. The effect of GO-ZnO produced by the different types of functionalized ZnO on the corrosion protection and barrier performance of epoxy coating was investigated by electrochemical impedence spectroscopy (EIS). The results revealed that the long duration of reaction time provided by the reflux method managed to increase the number of siloxane bonds on the ZnO surface, allowing more amine groups to be attached onto the GO sheets and thus improve the corrosion resistance of epoxy. |
| Databáze: | OpenAIRE |
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