| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
고분자 합성 |
| 제목 |
In-Situ Polymerization of Linear and Hyperbranched Poly(ether-ketone) in the Presence of Graphite in a Mild Polyphosphoric Acid |
| 초록 |
In the optimized aromatic electrophilic substitution reaction condition in poly(phosphoric acid) (PPA) with an optimized phosphorous pentoxide (P2O5) content, high molecular weight linear and hyperbranched poly(ether-ketone)s (PEKs) were prepared in the presence of two types of graphites. Graphite is the stacks of graphene layers with weaker van der Waals forces between the layers. The complete exfoliation of these layers is very difficult because of high crystal lattice energy. The polyetherketone-grafted graphites were studied by scanning electron microscopy (SEM), transmission electron microscope (TEM), atomic force microscopy (AFM), and so on. The results showed that some portions of graphites were completely exfoliated and rolled into nanoscale tubes. The result envisions that this would be one of the simplest, cheapest and best approaches to afford nanoscale composites starting from low-cost two-dimensional graphite sheets to high performance one-dimensional nanotube. |
| 저자 |
최은경1, 오세진1, Loon-Seng Tan2, 백종범1
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| 소속 |
1충북대, 2US Air Force Research Lab |
| 키워드 |
Graphite; Poly(ether-ketone); Hyperbranched Polymer
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| E-Mail |
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