Chemical Functionalization of Graphene Oxide by Poly(styrene sulfonate) Using Atom Transfer Radical and Free Radical Polymerization: A Comparative Study
Autor: | Mohsen Mosadegh, Hossein Mahdavi |
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Rok vydání: | 2017 |
Předmět: |
Nitroxide mediated radical polymerization
Materials science Polymers and Plastics Atom-transfer radical-polymerization General Chemical Engineering Materials Science (miscellaneous) Radical polymerization Chain transfer 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences Living free-radical polymerization Cobalt-mediated radical polymerization Polymer chemistry Materials Chemistry Reversible addition−fragmentation chain-transfer polymerization 0210 nano-technology Ionic polymerization |
Zdroj: | Polymer-Plastics Technology and Engineering. 56:1247-1258 |
ISSN: | 1525-6111 0360-2559 |
Popis: | Poly(sodium styrenesulfonate)-functionalized graphene was prepared from graphene oxide, using atom transfer radical polymerization and free radical polymerization. In atom transfer radical polymerization route, the amine-functionalized GO was synthesized through hydroxyl group reaction of GO with 3-amino propyltriethoxysilane. Atom transfer radical polymerization initiator was grafted onto modified GO (GO-NH2) by reaction of 2-bromo-2-methylpropionyl bromide with amine groups, then styrene sulfonate monomers were polymerized on the surface of GO sheets by in situ atom transfer radical polymerization. In free radical polymerization route, the poly(sodium 4-styrenesulfonate) chains were grafted on GO sheets in presence of Azobis-Isobutyronitrile as an initiator and styrene sulfonate monomer in water medium. The resulting modified GO was characterized using range of techniques. Thermal gravimetric analysis, scanning electron microscopy, transmission electron microscopy, and atomic force microscopy re... |
Databáze: | OpenAIRE |
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