| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 봄 (04/12 ~ 04/13, 대전컨벤션센터) |
| 권호 |
37권 1호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Graphene modified with alcohols and their nanocomposites of shape memory polyurethane |
| 초록 |
As a novel method to make hydroxyl groups on graphene and to reduce the defects of graphene simultaneously, graphene prepared by the thermal reduction of graphite oxide was modified by the reaction with methanol or 1-butanol utilizing aqueous HBF4 solution. Gravimetry, thermogravimetry, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy showed that the alcohols reacted with the epoxide groups on graphene. The reinforcing effect by graphene, observed in tensile properties and shape memory behavior of polyurethane/graphene nanocomposites, was enhanced when the graphene was modified with methanol. However, the decreases of density and glass transition temperature of the shape memory nanocomposites were more evident with alcohol-modified graphenes. This showed that the increased hydroxyl group on graphene enhanced chemical bonding or physical interaction between graphene and matrix molecules, and consequently restricted the dense packing of matrix molecules. |
| 저자 |
오경민, 정한모, 한수진, 오성민, 다오, 간수크, 김기태
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| 소속 |
울산대 |
| 키워드 |
Shape memory; Polyurethane; Modified FGS
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| E-Mail |
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