| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Nonisothermal Crystallization Behaviors of PE/MWNT Nanocomposites by In Situ Metallocene Polymerization |
| 초록 |
We successfully polymerized polyethylene (PE) / multiwall carbon nanotube (MWNT) nanocomposites with various weight fractions using in situ metallocene polymerization. Thermal stabilities (onset temperature, degradation temperature) of PE/MWNT nanocomposites dramatically enhanced as the amount of MWNT is increased. As high as 50℃ increase of the degradation temperature was achieved for 12.4wt% PE/MWNT nanocomposite in N2 atmosphere. Thermal behavior and nonisothermal crystallization of polymerized nanocomposites were examined using Differential scanning calorimeter (DSC). For nonisothermal studies, the melt was crystallized by cooling at rates from 1℃/min to 7℃/min. A kinetic analysis based on the proposed model for nonisothermal crystallization kinetics to remedy the drawback of the Ozawa equation was applied. We confirmed that introduction of MWNT into PE matrix obviously causes heterogeneous nucleation and creates the growth mechanism of 2-dimensional rod shape. |
| 저자 |
김지헌1, 서용석1, 곽순종2
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| 소속 |
1서울대, 2한국과학기술(연) |
| 키워드 |
nonisothermal crystallization; PE/MWNT nanocomposites; in situ metallocene polymerization
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| E-Mail |
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