| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 봄 (04/07 ~ 04/08, 대전컨벤션센터) |
| 권호 |
36권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
"Direct’’ grafting of linear macromolecular ‘‘wedges’’ to the edge of pristine graphite to prepare edge-functionalized graphene-based polymer composites |
| 초록 |
The edges of pristine graphite were covalently grafted with para-poly(ether-ketone) (pPEK) in a mildly acidic polyphosphoric acid (PPA)/phosphorus pentoxide (P2O5) medium. The resulting pPEK grafted graphite (pPEK-g-graphite) showed that the pristine graphite had been exfoliated into a few layers of graphene platelets (graphene-like sheets). As a result, the tensile properties of pPEK-g-graphite films were greatly improved compared to those of controlled pPEK films. Upon tracing wide-angle X-ray scattering patterns of the film under strain, the graphene-like sheets were further exfoliated by an applied shear force, suggesting that a toughening mechanism for the pPEK-g-graphite film occurred. This approach envisions that the ‘‘direct’’ edge grafting of pristine graphite without pre-treatments such as corrosive oxidation and/or destructive sonication is a simple and efficient method to prepare graphene-based polymer composites with enhanced mechanical properties. |
| 저자 |
전인엽1, 최은경2, 오세진2, 백종범1
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| 소속 |
1울산과학기술대, 2충북대 |
| 키워드 |
Graphene; Functionalization; Poly(ether-ketone)s;
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| E-Mail |
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