| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 봄 (04/12 ~ 04/13, 대전컨벤션센터) |
| 권호 |
37권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Effect of chemical modification of graphene oxide on mechanical, electrical and thermal properties of Polyimide/graphene oxide nanocomposites |
| 초록 |
Polyimide (PI) nanocomposites were prepared with exfoliated graphene oxide (GO) and chemically reduced GO (rGO) nanosheets by using polyamic acid (PAA)/GO and PAA/rGO composites as the precursors, and their morphologies and mechanical and electrical properties were explored. The GO was reduced with several reducing agents such as hydrazine, dimethylformamide, and L-ascorbic acid. Graphene has opened up a new opportunity to introduce it into a PI matrix for developing PI-based nanocomposites with superior properties. The possible non-covalent hydrogen bonding (between functional groups of the GO/rGO and those of the PAA) as well as a simultaneous partial in-situ reaction could suppress the phase separation during the thermal imidization process. The prepared PI/GO (rGO) nanocomposites showed improved mechanical, electrical and thermal properties as compared its pure PI. Their properties were strongly correlated with the reduced states of the used rGOs. |
| 저자 |
하헌욱, 박수영
|
| 소속 |
경북대 |
| 키워드 |
Graphene; Polyimide; nanocomposites
|
| E-Mail |
|
