title: Elastic-hydrodynamic transition of gel friction.
abstract: We report the surface sliding friction of a high strength gel against a glass substrate under a normal pressure range of 0.01-2.5 MPa. The friction of the gel swollen with different viscous solvents is investigated over a wide velocity range. A velocity-viscosity conversion relationship is established. From the velocity-viscosity conversion relationship, a master curve that is characteristic to the elastic-hydrodynamic transition is observed. The results indicate that the adsorption model proposed by our previous work is valid even under a pressure up to MPa orders, which is the order of pressure that a cartilage sustains in the articular joints.
authors.affiliation: Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Kurokawa
authors.forename: Taiki
authors.initials: T
authors.lastname: Tominaga
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Katsuyama
authors.forename: Rikimaru
authors.initials: R
authors.lastname: Kuwabara
authors.forename: Hidemitsu
authors.initials: H
authors.lastname: Furukawa
authors.forename: Yoshihito
authors.initials: Y
authors.lastname: Osada
authors.forename: Jian Ping
authors.initials: JP
authors.lastname: Gong
mesh_terms: D000327:Adsorption; D004548:Elasticity; D005898:Glass / Q000737:chemistry; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000138:chemical synthesis / Q000737:chemistry*; D007700:Kinetics; D008956:Models, Chemical; D011312:Pressure; D012997:Solvents / Q000737:chemistry; D013499:Surface Properties; D014783:Viscosity
chemical_list: D012997:Solvents; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate