Počet záznamů: 1
Micromechanical properties of one-step and sequentially crosslinked UHMWPEs for total joint replacements
- 1.
SYSNO ASEP 0439729 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Micromechanical properties of one-step and sequentially crosslinked UHMWPEs for total joint replacements Author(s) Šlouf, Miroslav (UMCH-V) RID, ORCID
Vacková, Taťana (UMCH-V) RID
Nevoralová, Martina (UMCH-V) RID, ORCID
Pokorný, D. (CZ)Source Title Polymer Testing. - : Elsevier - ISSN 0142-9418
Roč. 41, February (2015), s. 191-197Number of pages 7 s. Language eng - English Country GB - United Kingdom Keywords UHMWPE ; joint replacement ; microindentation hardness testing Subject RIV CD - Macromolecular Chemistry R&D Projects NT12229 GA MZd - Ministry of Health (MZ) TA01011406 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) GA14-17921S GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000348970100025 EID SCOPUS 84934767184 DOI https://doi.org/10.1016/j.polymertesting.2014.12.003 Annotation Microindentation hardness testing was applied to five types of highly-crosslinked ultrahigh molecular weight polyethylenes (UHMWPEs) for total joint replacements. UHMWPE's were crosslinked using the same total radiation dose (75 kGy; γ-radiation) either by the standard, single-step irradiation (one-step crosslinking) or by the newer, several-step irradiation (sequential crosslinking). Each irradiation step was followed by thermal treatment (annealing at 110 °C or remelting at 150 °C) in an inert atmosphere. We showed that: (i) the micromechanical properties were determined by the last thermal treatment step, while the number of irradiation cycles was insignificant and (ii) the values of microhardness, microcreep and microplasticity from the microindentation experiments were in excellent agreement with the changes of UHMWPE structure, characterized by IR and DSC. Statistical evaluation of the results, the agreement with theoretical predictions and the comparison with previous studies on similar systems demonstrated that microindentation was a reliable and sensitive method of UHMWPE characterization. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2015
Počet záznamů: 1