2014 Fiscal Year Final Research Report
Preparation of dispersion of graphene and application to conductive polymer composite film
| Project/Area Number |
24560836
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | Niigata University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 酸化グラフェン / 表面グラフト / ラジカルトラップ / 配位子交換反応 / イオン性官能基 / 分散性制御 / GO複合高分子 |
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| Outline of Final Research Achievements |
The grafting of polymers onto graphene oxide (GO) surface and preparation of dispersion of GO in organic solvents and polymer matrices were investigated. (1) poly(ethylene glycol) (PEG) was grafted onto GO by the trapping of PEG radicals formed by the thermal decomposition of PEG-azopolymer, which has azo linkage in the PEG chain. (2) The grafting of copolymers having ferrocene moieties was achieved by ligand-exchange reaction of the ferrocene moieties of the copolymer with aromatic rings of GO in the presence of AlCl3. Polymer-grafted GO gave stable dispersions in organic solvents. Anionic and cationic functional groups were introduced onto GO by the reaction with the corresponding azo-initiators. The dispersion of these ionic functional group-introduced GO in water was readily controlled by pH of the dispersant. In addition, composite films were successfully prepared by mixing of reduced GO in solvent with polymer solutions. The properties of these films were investigated.
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| Free Research Field |
高分子複合材料 ナノカーボン
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