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| Type |
Oral Presentation |
| Area |
Oral Presentation of Young Analytical Chemists Ⅱ |
| Room No. |
303호 |
| Time |
FRI 09:28-: |
| Code |
ANAL2.O-11 |
| Subject |
Synthesis, dispersion and tribological potential of alkyl functionalized graphene oxide for oil-based lubricant additives |
| Authors |
최진영, 김용재, 박영호1, 이창섭*
계명대학교 화학과, Korea
1한국국제대학교 제약공학과, Korea
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| Abstract |
Graphene has been reported as an excellent lubricant additive for reducing adhesion and friction when coated on various surfaces as an atomically thin material with low surface energy. 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 butylchloride, octylchloride in ethanol under reflux, then 1.0x10-3 wt% of alkyl functionalized GO are added into the base oil (PAG oil) and ultrasonicated for dispersion. Chemical and structural properties of the synthesized alkyl functionalized graphene are investigated by Fourier transform infrared (FT-IR), 13C solid-state nuclear magnetic resonance (13C NMR), X-ray diffraction (XRD), and scanning electron microscope (SEM). The tribological tests are performed with a tribometer and the test mode is ball-on-disk. The van der Waals interaction between the octyl chains grafted on GO and the alkyl chains of base oil provided long-term dispersion stability so that the octyl functionalized GO showed better dispersion than butyl functionalized GO. The octyl functionalized GO also decreased both friction and wear considerably under the rubbing contacts between ball and disk.
Acknowledgements: This research was financially supported by the Ministry of Education, Science Technology (MEST) and National Research Foundation of Korea (NRF) through the Human Resource Training Project for Regional Innovation (No. 2015035858).
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| E-mail |
cjy5934@naver.com |
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119th General Meeting of the KCS