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Cold atmospheric pressure gas plasma enhances the wear performance of ultra-high molecular weight polyethylene.

Abstract：

:Ultra-high molecular weight polyethylene (UHMWPE) is frequently employed in joint replacements because of its high biocompatibility; however, this material does not exhibit particularly strong wear performance, thus potentially reducing the longevity of such devices. Numerous techniques have been investigated to increase the resistance to wear of UHMWPE, but they are all based on expensive machinery and require a high level of safety precautions. Cold atmospheric pressure gas plasma treatment is an inexpensive process that has been used as a surface modification method and as a sterilization technique. We demonstrate for the first time that a helium/oxygen cold atmospheric pressure gas plasma can be used to enhance the wear performance of UHMWPE without affecting the cytocompatibility of the material. The exposure to a cold atmospheric pressure gas plasma results in a greater level of crosslinking of the polyethylene chains. As a consequence of the higher crosslinking, the material stiffness of the treated surface is increased.

journal_name

Acta Biomater

journal_title

Acta biomaterialia

authors

Perni S,Kong MG,Prokopovich P

doi

10.1016/j.actbio.2011.12.007

subject

Has Abstract

pub_date

2012-03-01 00:00:00

pages

1357-65

issue

3

eissn

1742-7061

issn

1878-7568

pii

S1742-7061(11)00543-5

journal_volume

8

pub_type

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