| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.598 |
| 발표분야 | 복합재료 |
| 제목 | Preparation of Multiwalled Carbon Nanotubes/ Polycaprolactone Composite by In-situ Polymerization |
| 초록 | Multiwalled carbon nanotubes (MWNTs) are vigorous studied due to its unique electrical, mechanical and thermal properties and incorporated into the polymers in order to improve the various properties of the polymers. In our study we prepared MWNT/polycaprolactone (MWNT/PCL) nanocomposites by in-situ polymerization [1,2], in which functionalized MWNTs (F-MWNTs) and unfunctionalized MWNTs (P-MWNTs) are used as reinforcing materials. The F-MWNTs has aromatic amine (COC6H4-NH2) on the sidewall, which was prepared by Friedal Craft acylation [3]. Differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), thermal gravimetrical analysis (TGA) and FT-IR were used to characterize MWNT/ PCL nanocomposites. It was found that F-MWNTs were well dispersed compared to P-MWNTs and chemically bonded with the polymer as indicated by appearance of amide group in FT-IR spectra (see Figure 1). The DMA analysis showed that the F-MWNTs did not give any effects on the glass transition temperature (Tg) of the polycaprolactone probably due to the limitation of the functionalization on the MWNT surface. The melting temperatures a little increased for both F-MWNT/PCL and P-MWNT/ PCL compared to PCL (see Figure 2). However, P-MWNT/PCL has a bimodal type of the crystallization during cooling with increased crystallization temperature, indicating that two different crystallization mechanisms may exist (see Figure 3). Fig 1. FT-IR spectra of (a) P-MWNT, (b) F-MWNT, (c) PCL, (d) 5%P-MWNTs/PCL, (e) 5%F-MWNTs/PC Refrences: 1) Robson F. Storey and John W. Sherman. Macromolecules 2002, 35, 1504-1512. 2) Eric Martin, Philippe Dubois, and Robbert Jerome. Macromoleculecules 2000, 33, 1530-1535. 3) Jong-Beom Baek, Christopher B. Lyons and Loon-Seng Tan. J. Mater. Chem., 2004, 14, 2052-2056. |
| 저자 | 칼리드 사이드1, 박수영2, 백종범3 |
| 소속 | 1경북대, 2Department of Polymer Science, 3Kyungpook National Univ. |
| 키워드 | Insitu polymerization; MCNT; Thermal analysis; FTIR |
