Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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Relationship between Crosslinking Processes and Mechanical Properties of UHMWPE for Artificial Joint

인공관절용 초고분자량폴리에틸렌의 가교결합 공정변수와 기계적 특성과의 상관관계

  • 김현묵 ((주)오티스바이오텍 인공관절연구소) ;
  • 김성곤 (고려대학교 의과대학 정형외과) ;
  • 이종대 (경기공업대학 정밀기계과) ;
  • 윤인식 (경기공업대학 메카트로닉스과)
  • Published : 2008.11.05
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Abstract

Various mechanical test were conducted on conventional and crosslinked ultra-high molecular weight polyethylene(UHMWPE) all prepared from the same lot of medical grade GUR 1050 for artificial joint. The conventional materials were not irradiated and treated by heating. The cosslinked materials were irradiated with $25kGy{\sim}200kGy$ by gamma-ray andthen annealed or remelted. Gamma-ray irradiation and heat treatment process were found to significantly impact the crystallinity, and hence the mechanical behavior, of the highly crosslinked UHMWPE. The radiation dose and heating conditions were key predictors of the uniaxial yielding, plastic flow, and failure properties of conventional and highly crosslinked UHMWPE. The correlation model from experiments would be the basic information to enhance the were resistance of artificial joint liner.

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