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| Type |
Poster Presentation |
| Area |
Analytical Chemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 19일 (금요일) 11:00~12:30 |
| Code |
ANAL.P-363 |
| Subject |
Synthesis, dispersion and tribological performance of alkyl functionalized graphene oxide as an oil lubricant additive |
| Authors |
Jong Seok Han, Jin-Yeong Choi, Chang-Seop Lee*
Department of Chemistry, Keimyung University, Korea
|
| Abstract |
Graphene has been reported as an excellent lubricant additive for reducing adhesion and friction, when coated on the various surfaces as an atomically thin material with low surface energy. Various methods have been proposed to enhance the physical properties of GO by its reduction, because it is difficult to apply GO to hydrophobic lubricant due to the large numbers of oxygen functional groups and the remarkably poor physical properties. To solve this problem, many attempts have been made to transform graphene into covalent bonds or noncovalent bonds. We have developed graphene oxide (GO) grafted with long alkyl chains to improve dispersion in oil-base lubricant as largely enhanced lipophilicity. Alkyl functionalized GO is synthesized by reacting NH2-GO with hexyl chloride, dodecyl chloride, hexadecyl chloride in ethanol under reflux, then 1.0x10-3 wt% of alkyl functionalized GO are added into the base oil (PAG oil) and oil containing WS2 and also ultrasonicated for dispersion. Chemical and structural properties of the synthesized alkyl functionalized graphene are investigated by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), and Scanning electron microscope (SEM). The tribological tests are performed with a tribometer via ball-on-disk test mode. |
| E-mail |
hanjs2914@naver.com |
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122nd General Meeting of the KCS