A comparative study of the tribological behaviors of CH3 - and CF3-terminated bilayer films | |
Chen L(陈丽)1; Li, Na1; Yang BP(杨保平)1; Zhang JY(张俊彦)2 | |
刊名 | Journal of Adhesion Science and Technology |
2016 | |
卷号 | 30期号:6页码:677-689 |
关键词 | Bilayer films hydrogen bonding micro-nano-tribology wear resistance adhesive force |
ISSN号 | 0169-4243 |
通讯作者 | 陈丽 |
英文摘要 | Two types of bilayer films were constructed on silicon substrates by a two-step self-assembly strategy. 3-[2-(2-aminoethylamino)ethylamino]propyl-trimethoxysilane (TA) was chosen to create underlayer with amino-terminated surface, then n-octanoic acid (nOA) and perfluorooctanoic acid (PFOA) were chemically grafted to the amino-derivatized substrates, respectively, to construct CH3- or CF3-terminated bilayer film, denoted as TA–nOA and TA–PFOA, respectively. The formation and surface properties of the films were evaluated by ellipsometry, contact angle goniometers, X-ray photoelectron spectroscopy, and atomic force microscope (AFM). The nano- and micro-tribological properties of TA–nOA and TA–PFOA bilayers were comparatively investigated via AFM and ball-on-plate tribometer, respectively. Results show that these two types of bilayer films exhibit good anti-adhesive and friction-reducing properties, and TA underlayer enhances the stability of these films through interchain hydrogen bonding. At nanoscale, TA–PFOA film exhibits lower adhesion and friction force because of –CF3 terminals with lower work of adhesion. However, the micro-tribological property of TA–PFOA is inferior to that of TA–nOA film. This could be attributed to the fact that –CF3 terminal groups with larger size tend to form less-ordered structure. Moreover, larger terminal groups lead to more energy dissipation during sliding. |
学科主题 | 材料科学与物理化学 |
收录类别 | SCI |
资助信息 | National Natural Science Foundation of China [grant number 51405212];Hongliu Young Teacher Cultivate Project of Lanzhou University of Technology [grant number Q201405] |
语种 | 英语 |
WOS记录号 | WOS:000366836000009 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/19195] |
专题 | 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_固体润滑国家重点实验室 |
作者单位 | 1.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China 2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
推荐引用方式 GB/T 7714 | Chen L,Li, Na,Yang BP,et al. A comparative study of the tribological behaviors of CH3 - and CF3-terminated bilayer films[J]. Journal of Adhesion Science and Technology,2016,30(6):677-689. |
APA | Chen L,Li, Na,Yang BP,&Zhang JY.(2016).A comparative study of the tribological behaviors of CH3 - and CF3-terminated bilayer films.Journal of Adhesion Science and Technology,30(6),677-689. |
MLA | Chen L,et al."A comparative study of the tribological behaviors of CH3 - and CF3-terminated bilayer films".Journal of Adhesion Science and Technology 30.6(2016):677-689. |
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