标题:Influence of molecular structure on lubrication of aqueous triblock copolymer lubricants between rutile surfaces: An MD approach
作者:Ta, T. D.; Tieu, A. K.; Zhu, H.; Wan, S.; Phan, H. T.; Hao, J.
作者机构:[Ta, T. D.; Tieu, A. K.; Zhu, H.; Wan, S.; Phan, H. T.] Univ Wollongong, Fac Engn & Informat Sci, Sch Mech Mat Mechatron & Biomed Engn, Northfield Ave 更多
通讯作者:Zhu, H
通讯作者地址:[Zhu, H]Univ Wollongong, Fac Engn & Informat Sci, Sch Mech Mat & Mechatron Engn, Northfield Ave, Wollongong, NSW 2522, Australia.
来源:TRIBOLOGY INTERNATIONAL
出版年:2019
卷:130
页码:170-183
DOI:10.1016/j.triboint.2018.09.027
关键词:Adsorption; Aqueous lubricant; Triblock copolymer; Molecular dynamics
摘要:The influence of molecular structure on adsorption and lubrication of aqueous triblock copolymer on TiO2 surfaces has been investigated using a realistic MD model. Reference data obtained from DFT calculations have been employed to develop an interaction potential between the copolymer and TiO2 surface. The results show that R Pluronics form an anchor-buoy-anchor structure absorbed on TiO2 surface and L Pluronic for buoy-anchor-buoy structure. The shear of tribo-system influences slightly on the orientation of copolymers and nonslip behavior has been observed at solid-fluid interfaces due to the strong adhesion strength of copolymer on rutile surface. The shear viscosity increases with copolymer concentration and molecular chain length. L Pluronic has a lower shear stress than the R ones.
收录类别:SCOPUS;SCIE
Scopus被引频次:1
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054065086&doi=10.1016%2fj.triboint.2018.09.027&partnerID=40&md5=d805c733578d6634aaabe52f8dba5383
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