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Yield, creep and wear properties of Ultra High Molecular Weight Polyethylene processed by High Velocity Compaction

Abstract : A new processing method, high velocity compaction (HVC), is particularly adapted to process ultra high molecular weight polyethylene (UHMWPE). In a previous study, it has been shown that UHMWPE processed by HVC exhibits superior Young's modulus and significant ductility, owing to the preservation of nascent high crystallinity and high-quality sintering (Jauffrès et al., Polymer 2007, 48, 6374). In this article, a comparative study of yield, creep, and wear properties of HVC–UHMWPE and compression-molded UHMWPE is reported. HVC–UHMWPE has an enhanced resistance to plastic deformation, likely due to its particular microstructure that improves its wear resistance. Concerning creep resistance, HVC–UHMWPE also exhibits enhanced performances thanks to its higher crystallinity. Consequently, HVC could be a new mean to improve UHMWPE performance for a wide range of applications, requiring high wear resistance, both in industrial and biomedical fields.
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David Jauffres, O. Lame, Gérard Vigier, Florence Dore, V. Fridrici. Yield, creep and wear properties of Ultra High Molecular Weight Polyethylene processed by High Velocity Compaction. Journal of Applied Polymer Science, Wiley, 2008, 110 (5), pp.2579-2585. ⟨10.1002/app.28697⟩. ⟨hal-00433974⟩

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