期刊
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
卷 75, 期 -, 页码 777-783出版社
ELSEVIER
DOI: 10.1016/j.msec.2017.02.147
关键词
Polyetheretherketone; Surface modification; Hydrophilic polymer brush; Friction
资金
- National Natural Science Foundation of China [51575278]
- Science and Technology Project of Jiangsu Province [BY2016004-08, BA2015054]
- Fundamental Research Funds for the Central Universities [30910612203]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Jiangsu Key Laboratory of Advanced Micro/Nano Materials and Technologies
The keys of biomaterials application in artificial joints are good hydrophilicity and wear resistance. One kind of the potential bio-implant materials is polyetheretherketone (PEEK), which has some excellent properties such as non-toxic and good biocompatibility. However, its bioinert surface and inherent chemical inertness hinder its application. In this study, we reported an efficient method for improving the surface wettability and wear resistance for PEEK, a layer of acrylic acid (AA) polymer brushes on PEEK surface was prepared by UV-initiated graft polymerization. The effects of different grafting parameters (UV-irradiation time/AA monomer solution concentration) on surface characteristics were clearly investigated, and the AA-g-PEEK specimens were examined by ATR-FTIR, static water contact angle measurements and friction tests. Our results reveal that AA can be successfully grafted onto the PEEK surface after UV irradiation, the water wettability and tribological properties of AA-g-PEEK are much better than untreated PEEK because that AA is a hydrophilic monomer, the AA layer on PEEK surface can improve its bearing capacity and reduce abrasion. This detailed understanding of the grafting parameters allows us to accurately control the experimental products, and this method of surface modification broadens the use of PEEK in orthopedic implants. (C) 2017 Elsevier B.V. All rights reserved.
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