Accession Number : ADA304561

Title :   Effect of Sterilization Irradiation on Friction and Wear of Ultrahigh-Molecular-Weight Polyethylene.

Descriptive Note : Technical paper,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Jones, William R., Jr. ; Hady, William F. ; Crugnola, Aldo

PDF Url : ADA304561

Report Date : MAY 1979

Pagination or Media Count : 23

Abstract : The effect of sterilization gamma irradiation on the friction and wear properties of ultrahigh-molecular-weight polyethylene (UHMWPE) sliding against 316L stainless steel in dry air at 23 C was determined. A pin-on-disk apparatus was used. Experimental conditions included a 1-kilogram load, a 0.061- to 0.27-meter-per-second sliding velocity, and a 32,000- to 578,000-meter sliding distance. Although sterilization doses of 2.5 and 5.0 megarads greatly altered the average molecular weight and the molecular weight distribution, the friction and wear properties of the polymer were not significantly changed. (MM)

Descriptors :   *HIP, *SURGICAL IMPLANTATION, *POLYETHYLENE PLASTICS, *STERILIZATION, VELOCITY, POLYMERS, MOLECULAR WEIGHT, STAINLESS STEEL, WEAR, GAMMA RAYS, REPLACEMENT, IRRADIATION, SURGERY, SLIDING FRICTION, PROSTHETICS.

Subject Categories : Medicine and Medical Research
      Elastomers and Rubber

Distribution Statement : APPROVED FOR PUBLIC RELEASE