| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.582 |
| 발표분야 | 복합재료 |
| 제목 | Crystallization and Nucleation Activity of PEN/MWCNT Nanocomposites |
| 초록 | As a great deal of progress in various industries have been made rapidly with the advances of modern science and technology, much research has been performed extensively on high performance polymer composites for the targeted application in various industrial fields. Carbon nanotube (CNT) has attracted a great deal of interests as advanced reinforcements from fields rangeing from the industrial to the scientific, since the discovery of a CNT by Iijima1 in 1991. The progressed research on the applications of CNTs suggested that the CNT can be used as a promising reinforcement in a new kind of polymer nanocomposites due to its remarkable physical characteristics such as high aspect ratio and high mechanical properties.2 However, due to high cost and limited availability of the CNT, only a few of the practical applications in the industrial fields have been realized yet. The combination of a CNT with thermoplastic polymers may provide attractive possibility to improve mechanical properties. The mechanical properties of polymer nanocomposites are influenced by their morphology and crystallization behavior.3 In this study, poly(ethylene 2,6-naphthalate) (PEN) reinforced with the multi-walled carbon nanotube (MWCNT) were prepared by a melt blending process. The nonisothermal crystallization behavior of PEN/MWCNT nanocomposites was investigated by differential scanning calorimeter employing various cooling rates. The nonisothermal crystallization of the PEN/MWCNT nanocomposites significantly depend on cooling rate and MWCNT content. The crystallization temperature increased with MWCNT content. The crystallization rate increased with increasing cooling rates for the PEN/MWCNT nanocomposites. The incorporation of the MWCNT accelerated the mechanism of the nucleation and crystal growth of the PEN, this effect being more pronounced at lower MWCNT content. The combined Avrami and Ozawa analysis was found to be more effective in describing the nonisothermal crystallization of PEN/MWCNT nanocomposites. The values of nucleation activity for the PEN/MWCNT nanocomposties were estimated to be 0.29, 0.26, 0.27, and 0.23, respectively. References 1. S. Iijima, Nature, 354, 56 (1991). 2. G. O. Shonaike and S. G. Advani, in Advanced Polymeric Materials: Structure and Property Relationships, CRC Press, New York, 2003. 3. T. D. Fornes, P. J. Yoon, H. Keskkula, and D. R. Paul, Polymer, 42, 9929 (2001). |
| 저자 | 김준영, 박회수, 김성훈 |
| 소속 | 한양대 |
| 키워드 | Carbon nanotube; Crystallization; Nanocomposites; Nucleation activity |
