Effects of photo-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine on physical properties of cross-linked polyethylene in artificial hip joints.

Effects of photo-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine on physical properties of cross-linked polyethylene in artificial hip joints. Research Abstract Details 

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Effects of photo-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine on physical properties of cross-linked polyethylene in artificial hip joints. Abstract Text:

Masayuki Kyomoto,Toru Moro,Tomohiro Konno,Hiroaki Takadama,Hiroshi Kawaguchi,Yoshio Takatori,Kozo Nakamura,Noboru Yamawaki,Kazuhiko Ishihara,

Osteolysis caused by wear particles from polyethylene in the artificial hip joints is a serious issue. We have used photo-induced radical graft polymerization to graft 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer onto the surface of cross-linked polyethylene (CLPE-g-MPC) in order to reduce friction and wear at the bearing surface of the joint. The physical and mechanical properties of CLPE and CLPE-g-MPC were not significantly different, expect that the friction coefficient of untreated CLPE cups was 0.0075, compared with 0.0009 for CLPE-g-MPC cup, an 88% reduction. After 3.0 x 10(6) cycles in the hip joint simulator test, we could not observe any wear of CLPE-g-MPC cups. We concluded that the advantage of photo-induced radical graft polymerization technique was that the grafted MPC polymer gave a high lubricity only on the surface and has no effect on the bulk properties of the CLPE substrate.

Effects of photo-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine on physical properties of cross-linked polyethylene in artificial hip joints. Publishing Authors By Initials

M Kyomoto,T Moro,T Konno,H Takadama,H Kawaguchi,Y Takatori,K Nakamura,N Yamawaki,K Ishihara,

For similar natural sciences: physics: radiation: radiation, ionizing: x-rays research abstracts see: natural sciences: physics: radiation: radiation, ionizing: x-rays research

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Effects of photo-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine on physical properties of cross-linked polyethylene in artificial hip joints. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of materials science. Materials in medicin

VOLUME: 18

Page Numbers: 1809-15

Journal Abbreviation:

ISSN: 0957-4530

DAY: 5

MONTH: 05

YEAR: 2007

Effects of photo-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine on physical properties of cross-linked polyethylene in artificial hip joints. Information

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LANGUAGE: eng

NlmUniqueID: 9013087

Effects of photo-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine on physical properties of cross-linked polyethylene in artificial hip joints. Keywords Mesh Terms:

KEYWORDS: X-Rays

MESH TERMS: radiation effects

Chemical & Substance for Abstract: Effects of photo-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine on physical properties of cross-linked polyethylene in artificial hip joints. Information

Substance Name: Polyethylene

Registry Number: 9002-88-4

Grant and Affiliation Information for Effects of photo-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine on physical properties of cross-linked polyethylene in artificial hip joints.

AFFILIATION: Research and Development Corporate Division, Japan Medical Materials Corporation, Uemura Nissei Bldg 9F, 3-3-31 Miyahara, Osaka, Japan. kyomotom@jmmc.jp

Country: United States

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MEDLINETA: J Mater Sci Mater Med

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