title: Analysis of friction between articular cartilage and polyvinyl alcohol hydrogel artificial cartilage.
abstract: Many biomaterials are being used to repair damaged articular cartilage. In particular, poly vinyl alcohol hydrogel has similar mechanical properties to natural cartilage under compressive and shearing loading. Here, three-factor and two-level friction experiments and long-term tests were conducted to better evaluate its tribological properties. The friction coefficient between articular cartilage and the poly vinyl alcohol hydrogel depended primarily on the three factors of load, speed, and lubrication. When the speed increased from 10 to 20 mm/s under a load of 10 N, the friction coefficient increased from 0.12 to 0.147. When the lubricant was changed from Ringer's solution to a hyaluronic acid solution, the friction coefficient decreased to 0.084 with loads as high as 22 N. The poly vinyl alcohol hydrogel was severely damaged and lost its top surface layers, which were transferred to the articular cartilage surface. Wear was observed in the surface morphologies, which indicated the occurrence of surface adhesion of bovine cartilage. Surface fatigue and adhesive wear was the dominant wear mechanism.
authors.affiliation: College of Electromechanical Engineering, Qingdao University of Science and Technology, No. 99 Song Ling Road, Laoshan District, Qingdao, 266061, People's Republic of China. lifnsd@163.com.
authors.forename: Feng
authors.initials: F
authors.lastname: Li
authors.affiliation: College of Electromechanical Engineering, Qingdao University of Science and Technology, No. 99 Song Ling Road, Laoshan District, Qingdao, 266061, People's Republic of China.
authors.forename: Anmin
authors.initials: A
authors.lastname: Wang
authors.affiliation: School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, People's Republic of China.
authors.forename: Chengtao
authors.initials: C
authors.lastname: Wang
mesh_terms: D000818:Animals; D001672:Biocompatible Materials; D002358:Cartilage, Articular / Q000502:physiology*; D002417:Cattle; D017276:Friction; D020100:Hydrogels / Q000737:chemistry*; D007595:Joint Prosthesis; D008422:Materials Testing / Q000379:methods; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D013314:Stress, Mechanical
chemical_list: D001672:Biocompatible Materials; D020100:Hydrogels; D011142:Polyvinyl Alcohol