| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Effect of graphene oxide sheets on diffusion dynamics of polymer thin films |
| 초록 |
Graphene-based nanomaterials have been in interest due to enhancement of polymer’s physical properties embedding the graphene oxide (GO). The interaction between the GO and polymers significantly affects the polymer dynamics in confined system. In this work, we used polymer thin films sandwiched between GO monolayers as a model composite system to quantitatively measure the mobility change of polymers near GO surfaces. We investigated two different investigated two different interaction, namely, a strongly attractive and a weakly attractive interaction. Polymer mobility of confined GO systems was analyzed a neutron reflectivity technique. The diffusion dynamics was compared as a function of polymer bilayer thicknesses. Consequently, when the film is thin (~1 Rg), diffusion coefficient decreases for poly(methyl methacrylate) (PMMA) thin films sandwiched between GO sheets. This is due to strongly attractive interaction between the GO and PMMA. |
| 저자 |
조경일1, 최기인1, 김태호1, Guangcui Yuan2, Suchil K. Satija3, 구자승4
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| 소속 |
1한국원자력(연), 2Center for Neutron Research, 3National, 4Institute of Standards and Technology |
| 키워드 |
graphene oxide; diffujsion dynamics; polymer; thin film
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| E-Mail |
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