Micro-Raman spectroscopy for the crystallinity characterization of UHMWPE hip cups run on joint simulators
| Autor: | Alessandro Bertoluzza, Anna Tinti, Concezio Fagnano, Mauro Rossi, G. L. Cacciari |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
musculoskeletal diseases
chemistry.chemical_classification Chemistry Organic Chemistry technology industry and agriculture Calorimetry Polymer Polyethylene Analytical Chemistry Characterization (materials science) Inorganic Chemistry symbols.namesake chemistry.chemical_compound Crystallinity visual_art visual_art.visual_art_medium symbols sense organs Ceramic Composite material Raman spectroscopy Joint (geology) Spectroscopy |
| Zdroj: | Journal of Molecular Structure. 521:89-95 |
| ISSN: | 0022-2860 |
| DOI: | 10.1016/s0022-2860(99)00427-5 |
| Popis: | In this work Raman microspectrometry was used to evaluate the crystallinity changes of hip cups made of ultra-high molecular weight polyethylene (UHMWPE). In vitro experiments were carried out using hip joint movement-wear simulators, run for five million cycles in water or bovine calf serum. The hip cups were subjected to mechanical friction with ceramic femoral heads (alumina–zirconia blend). The crystallinity of the polymer hip cups was studied as a function of inner surface position and thickness, from the stressed surface to the unstressed outer one. The Partial Least Square (PLS-l) calibration was used to correlate the Raman spectra with the crystallinity of the polymer measured with DSC calorimetry. |
| Databáze: | OpenAIRE |
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