| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.237 |
| 발표분야 | 기능성 고분자 |
| 제목 | Grafting of Hyperbranched Polyetherketones (PEKs) onto Multi-Walled Carbon Nanotubes from A3 + B2 Monomers |
| 초록 | We have developed facile synthesis of hyperbranched PEK’s from A3 and B2 or A2 and B3 monomers approaches,1 using different solubility of monomers in the hydrophilic reaction medium, PPA/P2O5, which could be the unique approach controlling molecular weight as well as preventing gelation. Since the nature of terephthalic acid (A2) and trimesic acid (A3) are hydrophilic relatively more soluble in the medium, that of diphenyl ether (B2) and 1,3,5-triphenoxybenzene (B3), on the other hand, are hydrophobic and phase separated from the reaction mixture. The monomer feed rate into reaction mixture are self-controlled not to form gelation. This is great advantage for the synthesis of hyperbranched polymer in practice. Now, this approach has been further extended to grafting of hyperbranched PEK’s onto multi-walled carbon nanotubes (MWNT). This paper is describing the important progress in the field of CNT research to achieve solubility in common organic solvents for application-specific purpose. Desired improvement in solubility could be varied upon the surface groups such as carboxylic acids and phenoxy groups, which were controlled by variation of monomer feed ratio and thus excess functionality could be decorated on the surface of MWNTs. In this approach, the different solubilities of monomers in reaction medium and the control of reaction time and temperature are the key factors to prevent intermolecular networking. The overall evidence based on the data from solubility, elemental analysis (EA), thermogravimetric analysis (TGA), FT-IR spectroscopy as well as scanning electron microscopy (SEM) and transmission electron microscopy (TEM) will be discussed. References Baek, J.-B.; Lyons, C. B.; Tan, L.-S. Polym. Prepr. 2004, 45(2), 647-648. |
| 저자 | 최자영1, Loon-Seng Tan2, 백종범1 |
| 소속 | 1충북대, 2AFRL |
| 키워드 | Hyperbranched Polymer; Multi-Walled Carbon Nanotube |
