Preparation of hydroxylated polyethylene surfaces.
The surfaces of high-density or ultra-high-molecular-weight polyethylenes were hydroxylated using a two-step process. The wetting and wear properties of the untreated (virgin) and surface hydroxylated polyethylenes were compared. The introduction of hydroxyl groups provided an increase in surface hydrophilicity resulting in reduced wear. Hydrophilicity was analyzed by optical analysis of water contact angle. Wear was determined by weight loss under conditions of a reciprocating pin-on-plate apparatus with the panels immersed in water or calf serum. These results suggest that hydroxylation of polyethylene friction-bearing orthopedic surfaces may lead to a longer joint life.
Zand
A
A
Kettering University, 1700 West Third Avenue, Flint, MI 48504, USA. azand@kettering.edu
Walter
N
N
Bahu
M
M
Ketterer
S
S
Sanders
M
M
Sikorski
Y
Y
Cunningham
R
R
Beholz
L
L
D001672:Biocompatible Materials / Q000737:chemistry* / Q000494:pharmacology; D017276:Friction; D006878:Hydroxides / Q000737:chemistry; D006900:Hydroxylation; D007596:Joints / Q000187:drug effects; D008970:Molecular Weight; D055095:Optics and Photonics; D020959:Polyethylene / Q000737:chemistry* / Q000494:pharmacology; D013499:Surface Properties; D014867:Water / Q000737:chemistry
D001672:Biocompatible Materials; D006878:Hydroxides; D014867:Water; D020959:Polyethylene; C031356:hydroxide ion