| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
38권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
A Quantitative Investigation of Rheological Percolation in PC/CNT Nanocomposites Using Crossover Points in Dynamic Shear Moduli |
| 초록 |
We demonstrated the rheological percolation of carbon nanotubes (CNTs) in polymer matrices. To diversify the microstructures, which is dependent on the polymer radius of gyration and chain entanglements, polycarbonates of different molecular weights were used to fabricate polymer/CNT nanocomposites. We found that the percolation theory cannot be taken into account for the determination of rheological percolation threshold in polymer/CNT nanocomposites with high molecular weight matrices. Instead, the crossover points in dynamic shear moduli were investigated to impart a quantitative indication of the rheological percolation threshold of nanofillers in polymer matrices. The effect of molecular weight and shear viscosity of the polymer medium on the percolation of CNTs were demonstrated experimentally with this definition. |
| 저자 |
문성식1, 김목원1, 프라카샨1, 정혁진1, 손영곤2, 박오옥1
|
| 소속 |
1KAIST, 2공주대 |
| 키워드 |
rheological percolation; carbon nanotube; polymer nanocomposite; crossover
|
| E-Mail |
|
