The mechanical properties of the ultrahigh molecular weight polyethylene (UHMWPE) modified by oxygen plasma

In this work, ultrahigh molecular weight polyethylene (UHMWPE) was modified with oxygen plasma generated by microwave electron cyclotron resonance (ECR). Surface microstructure and properties of UHMWPE were studied by means of water contact angle measurement, Fourier transform infrared spectroscopy...

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Bibliographic Details
Published in:Surface & coatings technology 2011-01, Vol.205 (8), p.2697-2701
Main Authors: Liu, Hengjun, Xie, Dong, Qian, Linmao, Deng, Xingrui, Leng, Y.X., Huang, Nan
Format: Article
Language:English
Subjects:
Applied sciences
Contact angle
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Molecular chains
Molecular weight
Oxygen plasma
Physics
Polyethylenes
Surface modification
Surface treatments
Tribological properties
Tribology
Ultrahigh molecular weight polyethylene
Wear tests
Wettability
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Summary:In this work, ultrahigh molecular weight polyethylene (UHMWPE) was modified with oxygen plasma generated by microwave electron cyclotron resonance (ECR). Surface microstructure and properties of UHMWPE were studied by means of water contact angle measurement, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy, scratch test and wear test. The results showed that O 2 plasma treatment could effectively improve the wettability, anti-scratch and tribological properties of UHMWPE. Many oxygen-based functional groups generated on the surface of the O 2 plasma modified UHMWPE, which resulted in the improvement of wettability. The plasma treatment process increased the crosslinking of UHMWPE molecular chains, which further enhanced the action force between the molecular chains and finally increased the surface hardness, anti-scratch capacity and tribological properties of UHMWPE.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2010.08.120