| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
The electrical conductivity of polycarbonate/carbon nanotube nanocomposites as functions of different size of multi-walled carbon nanotube and flow type |
| 초록 |
Effects of multi-walled carbon nanotube (MWCNT) type and flow type (shear and elongational flow) on the electrical conductivity of polycarbonate (PC)/MWCNT nanocomposites were investigated. Two different MWCNTs produced a huge difference in electrical conductivity in an injection molded PC/MWCNT nanocomposite. It was observed that MWCNTs having a higher aspect ratio provide much lower electrical conductivity in injection molded PC/MWCNT nanocomposites while the conductivities of compression molded samples from two different MWCNTs were the same. We found that this is due to a difference in the deformability of the two MWCNTs. Nanocomposite samples prepared at a higher extensional rate and shear rate showed lower electrical conductivity. This is attributed to flow induced orientation of the MWCNTs. The experimental results were discussed in relation to variation in the tube-tube contact due to the change of the MWCNT orientation. |
| 저자 |
이영실, 윤관한
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| 소속 |
금오공과대 |
| 키워드 |
multi-walled carbon nanotube; shear flow; elongational flow; electrical conductivity; polycarbonate; nanocomposite; percolation
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| E-Mail |
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