| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 고분자 나노구조와 물성 |
| 제목 | Electroactive Shape Memory Effect of Polyurethane Composites Mixed of Carbon Nanotube and Polypyrrole |
| 초록 | Shape memory materials have the capability of changing their shape upon application of an external stimulus. We report the electroactive shape memory composites obtained by combining shape memory polyurethane, multiwalled carbon nanotubes (MWNTs), and polypyrrole (PPy). A series of composites with different MWNTs and PPy composition were prepared, and their morphology, material properties, and electroactive shape recovery were investigated. From the morphological observation by SEM, it was found that the MWNTs could be well dispersed in PU matrix by controlling morphology with different mixing of PPy and MWNTs. For the sample incorporating 2.5 wt% MWNTs, the modulus and tensile strength were improved by about 227% and 53%, respectively, whereas those of the composites decreased with the addition of PPy. The PPy-coated PU-MWNTs composites showed the highest conductivity. Such the conductivity of this composite was enough to show good electroactive shape recovery by applying voltage to the sample. †Corresponding author: J. W. Cho (E-mail: [email protected]) |
| 저자 | 정용채, Nanda Gopal Sahoo, 구남서, 조재환 |
| 소속 | 건국대 |
| 키워드 | Shape Memory; Polypyrrole; Polyurethane |
