A single asperity sliding contact model for molecularly thin lubricant

Zhang, Youfeng; Polycarpou, Andreas A.

doi:10.1007/s00542-016-2910-7

Cited by 5 publications

(1 citation statement)

References 31 publications

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“…2 Especially in recent years, the adsorption of polymers at solid/liquid interfaces has been intensively investigated because it is relevant to many technological applications and common industrial processes involving these substances such as paper making, mineral processing, waste water treatment, paints, batteries, medicine, biological processes, ultrathin multilayers, polymer brushes and hard disk interfaces. [3][4][5][6][7][8] With the emergence and improvement of surface-sensitive techniques such as surface force apparatus, 9 atomic force microscope (AFM) [10][11][12] and quartz crystal microbalance (QCM), 3,13-15 a great number of experimental studies on the adsorption mechanism, adsorbed structures and solid/liquid interfacial properties of molecules have been carried out. In an surface force apparatus test, the width of the confinement area can be in the micrometer range, which results in a large increase in the geometric confinement ratio.…”

Section: Introductionmentioning

confidence: 99%

Nanoscale monolayer adsorption of polyelectrolytes at the solid/liquid interface observed by quartz crystal microbalance

Guo

Wang

Yang

et al. 2017

Polym J

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As a device with excellent potential, the quartz crystal microbalance (QCM) has been developed to study the interfacial properties of liquids, such as adsorption/desorption kinetics, electrochemical reaction mechanisms and interfacial viscosity. In this research, the adsorption properties of cationic polyelectrolytes (poly(diallyl dimethylammonium chloride) and poly(allylamine hydrochloride)) on solid surfaces were observed using QCM. The results indicated that the response to adsorption was different with a change in polyelectrolyte solution concentration and that the frequency shift increased as the solution concentration increased. The adsorption of the polyelectrolyte also depends on the solid surfaces and solution pH values. Furthermore, the change in the molecular conformation of the polyelectrolyte molecules is the main factor that affects the adsorption properties and structures.

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