| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 가을 (10/06 ~ 10/08, 제주 ICC) |
| 권호 |
39권 2호 |
| 발표분야 |
대학원생 구두발표 (영어발표, 발표15분) |
| 제목 |
Enhanced Property of H2O-Barrier Film by Using Non-Oxidized Graphene Flakes Produced via Solvothermal Method |
| 초록 |
Graphene has been studied as a filler for composites to lower moisture permeation. Its high aspect ratio and unique molecular impenetrability are attractive; however, the importance of the graphene’s quality needs further study. Here we demonstrate the enhanced moisture barrier property of polyethylene (PE) composite by incorporating non-oxidized graphene flakes (NOGFs). An organic molecule, quinoline, was intercalated into graphite during solvothermal process, yielding a partial graphite intercalation compound. The compound was then exfoliated into highly crystalline NOGFs with extremely low contents of oxygen (3.17 %). The lateral sizes were 5 to 50 times larger compared to NOGFs from conventional methods. Moreover, the NOGFs were non-covalently functionalized by quinoline concurrently during the process of intercalation, ensuring homogeneous dispersion of the NOGFs in PE matrix. Initial test of moisture barrier on the NOGF-PE composite shows 56% of improvement from pure PE film. |
| 저자 |
김정모, 송성호, 최찬용, 김진, 윤혜원, Travis Novak, 전석우
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| 소속 |
KAIST |
| 키워드 |
non-oxidized graphene flake; moisture barrier; composite film; solvothermal; non-covalent functionalization; polyethylene; quinoline
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| E-Mail |
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