Orientation of reduced graphene oxide in composite coatings
Oluşturanlar
- 1. SINTEF Ind, Forskningsveien 1, NO-0373 Oslo, Norway
- 2. SINTEF Digital, Forskningsveien 1, NO-0373 Oslo, Norway
- 3. SINTEF Ocean, Brattorkaia 17C, NO-7010 Trondheim, Norway
- 4. Nanografi Nanotechnol AS, ODTU Teknokent 13-1-1, TR-06531 Cankaya, Ankara, Turkiye
- 5. Funct Coatings & Transparencies Technol Ctr, Turkish Aerosp, Ankara, Turkiye
Açıklama
Composite coatings containing reduced graphene oxide (rGO) and 3-(aminopropyl)triethoxysilane functionalised rGO (APTES-rGO) were prepared by sol-gel technology and deposited on Al 2024 T-3. Covalent functionalisation of GO by APTES occurred by formation of amide bonds, accompanied by GO reduction. The thin sheets were retained. The hydrophilicity of the coating increased when APTES-rGO was added. The opposite was observed when GO was added. A key finding is that the rGO flakes agglomerate and lie in a random orientation in the coating, whereas the APTES-rGO flakes are more evenly distributed in the matrix and appear to lie along the plane of the substrate.
In composite coatings containing 3-(aminopropyl)triethoxysilane functionalised rGO (APTES-rGO), the flakes are distributed in the matrix and appear to lie along the plane of the substrate.
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