Covalent functionalization of chemically converted graphene sheets via silane and its reinforcement

Polydisperse, functionalized, chemically converted graphene (f-CCG) nanosheets, which can be homogeneously distributed into water, ethanol, DMF, DMSO and 3-aminopropyltriethoxysilane (APTS), were obtained via facile covalent functionalization with APTS. The resulting f-CCG nanosheets were characteri...

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Bibliographic Details
Published in:Journal of materials chemistry 2009-01, Vol.19 (26), p.4632-4638
Main Authors: HUAFENG YANG, FENGHUA LI, CHANGSHENG SHAN, DONGXUE HAN, QIXIAN ZHANG, LI NIU, IVASKA, Ari
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Nanoscale materials and structures: fabrication and characterization
Other topics in nanoscale materials and structures
Physics
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Summary:Polydisperse, functionalized, chemically converted graphene (f-CCG) nanosheets, which can be homogeneously distributed into water, ethanol, DMF, DMSO and 3-aminopropyltriethoxysilane (APTS), were obtained via facile covalent functionalization with APTS. The resulting f-CCG nanosheets were characterized by FTIR, XPS, TGA, EDX, AFM, SEM, and TEM. Furthermore, the f-CCG nanosheets as reinforcing components were extended into silica monoliths. Compressive tests revealed that the compressive failure strength and the toughness of f-CCG-reinforced APTS monoliths at 0.1 wt% functionalized, chemically converted graphene sheets compared with the neat APTS monolith were greatly improved by 19.9% and 92%, respectively.
ISSN:0959-9428
1364-5501
DOI:10.1039/b901421g