High Loading Capacity and Wear Resistance of Graphene Oxide/Organic Molecule Assembled Multilayer Film.
High Loading Capacity and Wear Resistance of Graphene Oxide/Organic Molecule Assembled Multilayer Film.
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氧化石墨烯-有机分子组装多层薄膜的高承载能力和耐磨性
DOI：
10.3389/fchem.2021.740140
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发表时间：
2021
影响因子：
5.5
通讯作者：
Zhang J
中科院分区：
文献类型：
--
作者：
Chen L;Wu G;Huang Y;Bai C;Yu Y;Zhang J
利用带负电的氧化石墨烯（GO）与带正电的聚二烯丙基二甲基氯化铵（PDDA）之间的强电荷相互作用，通过交替静电吸附，在羟基化硅衬底上制备了（GO/PDDA）n多层自组装膜.通过水接触角测量、膜厚测量、原子力显微镜（AFM）和X射线光电子能谱（XPS）分析了薄膜的形成和结构。同时，利用原子力显微镜和球-板摩擦磨损试验机分别研究了微尺度和宏观尺度下的摩擦学行为。结果表明，（GO/PDDA）n多层膜在微观和宏观尺度上均表现出优异的减摩抗磨性能，这是由于（GO/PDDA）n多层膜的特殊结构，即GO-GO层状结构和弹性的三维晶体结构。这种薄膜结构适用于设计MEMS和其他微器件的分子润滑剂。
Taking advantage of the strong charge interactions between negatively charged graphene oxide (GO) sheets and positively charged poly(diallyldimethylammonium chloride) (PDDA), self-assembled multilayer films of (GO/PDDA)n were created on hydroxylated silicon substrates by alternating electrostatic adsorption of GO and PDDA. The formation and structure of the films were analyzed by means of water contact angle measurement, thickness measurement, atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). Meanwhile, tribological behaviors in micro- and macro- scale were investigated by AFM and a ball-on-plate tribometer, respectively. The results showed that (GO/PDDA)n multilayer films exhibited excellent friction-reducing and anti-wear abilities in both micro- and macro-scale, which was ascribed to the special structure in (GO/PDDA)n multilayer films, namely, a well-stacked GO–GO layered structure and an elastic 3D crystal stack in whole. Such a film structure is suitable for design molecular lubricants for MEMS and other microdevices.
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影响因子：
3.7
作者：
Ou, Junfei;Wang, Jinqing;Yang, Shengrong
通讯作者：
Yang, Shengrong
影响因子：
3.9
作者：
Chen, Li;Yang, Baoping;Zhang, Junyan
通讯作者：
Zhang, Junyan
钛/钛合金基体上自组装氧化石墨烯纳米层的纳米/微米摩擦学行为
影响因子：
6.7
作者：
Li, Peng Fei;Zhou, Hua;Cheng, Xian-Hua
通讯作者：
Cheng, Xian-Hua
十八烷基三氯硅烷在氧化石墨烯上的自组装及其所得薄膜的摩擦学性能
影响因子：
3.7
作者：
Ou, Junfei;Wang, Ying;Yang, Shengrong
通讯作者：
Yang, Shengrong
影响因子：
3.9
作者：
Foster, Trevor T.;Alexander, Morgan R.;McAlpine, Eoghan
通讯作者：
McAlpine, Eoghan