| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 복합재료 |
| 제목 | Synthesis of bead-string shaped PS grafted multi-walled carbon nanotubes via emulsion polymerization |
| 초록 | Successful applications of carbon nanotubes(CNTs) in the field of polymer composites require well-dispersed nanotubes with good adhesion with host matrix, which, unfortunately is not easily obtained. Processing is rendered difficult by poor solubility of CNTs in common organic solvents. Moreover, inherently weak nanotube-polymer interactions result in poor interfacial adhesion, which can lead to the aggregation of nanotubes within the matrix and yield very poor effect in physical properties. To enhance the solubility and the interfacial adhesion of CNTs, the synthesis of polymer-grafted CNTs has been suggested in various ways. It increases effectively the solubility and dispersion of nanotubes even with a low degree of functionalization1,2,3. In this study, we show that polystyrene grafted multi-walled carbon nanotube (PS-g-MWNTs) nanocomposites can be prepared by emulsion polymerization in an aqueous non-ionic surfactant solution.4 To induce the polymerization on the surface of nanotubes, the coupling agent, [2-(Methacryloyloxy)ethyl]trimethylammonium chloride (MATMAC) was added. The use of non-ionic surfactants and the proper coupling agent produces the interesting evolution of the morphology, the bead-string shaped PS-grafted MWNTs. In addition, we could obtain MWNTs coated with flat PS layer by dissolving in toluene over 72 hours. This method would be utilized to make it better the dispersion of CNTs within the polymer composites. Figure 1. Schematic diagram of synthesis of PS grafted MWNTS Reference 1. Yuanqin Liu, Zhaoling Tao, and Alex Adronov, Macromolecules 2005, 38, 1172-1179 2. Shuhui Qin, Dongqi Qin, Warren T. Ford, Daniel E. Resasco, and Jose E. Herrera, Macromolecules 2004, 37, 752-757 3. M. S. P. Shaffer and K. Koziol, CHEM. COMMUN., 2002, 2074-2075 4. Harry J. Barraza, Francisco Pompeo, Edgar A. O’Rear, and Daniel E. Resasco, Nano Lett. 2002, 2, 797-802 |
| 저자 | 박인철1, 이무성2, 박민1, 김준경1, 이현정1 |
| 소속 | 1한국과학기술(연), 2전남대 |
| 키워드 | Multi-walled carbon nanotubes; Emulsion polymerization; grafting |
