| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 복합재료 |
| 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 using different solubility of monomers in the reaction medium, PPA/P2O5, which could be the unique approach controlling molecular weight as well as preventing gelation. The approaches involve that selective monomer solubility is the key. For example, hydrophilic monomers such as terephthalic acid (A2) and trimesic acid (A3) are quite well soluble in the hydrophilic reaction medium. On the other hand, hydrophobic monomers such as diphenyl ether (B2) and 1,3,5,-triphenoxybenzene (B3) are immiscible and phase separated from the reaction medium. Thus, the ether monomer feed rate into reaction mixture are self-controlled preventing gelation. This is one of the best known approaches 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 reporting further important progress in the field of CNT research by grafting of hyperbranched PEK onto the surface of MWNT to achieve enhanced solubility of resultant nanocomposites in common organic solvents, and thus they could be potentially useful for supercapacitors and ion-exchange membranes for the secondary batteries. We are going to present the clear evidences from elemental analysis (EA), thermogravimetric analysis (TGA), FT-IR spectroscopy, Raman spectroscopy, matrix assisted laser desorption/ionisation time of flight mass spectrometry (MALDI-TOF), nuclear magnetic resonance (NMR) spectroscopy as well as scanning electron microscopy (SEM) and transmission electron microscopy (TEM). |
| 저자 | 최자영1, 이화정1, 오세진1, Loon-Seng Tan2, 백종범1 |
| 소속 | 1충북대, 2US Air Force Research Lab (AFRL)/MLBP |
| 키워드 | Hyperbranched polymer; Multi-Walled Carbon Nanotube |
