From 26th April 2010 to 21st May 2010 in the Institute gallery of IMC AS CR, an exhibition Martin Janíček:Voice calligraphy takes place
77 PMM Conference Polymers in Medicine is to be held on 8.-12. July 2012.
74 PMM conference Contemporary Ways to Tailor-made Polymers: 18 - 22 July 2010
| Supervisor ((Consultant)) | Miroslav Šlouf, PhD |
|---|---|
| Topic | UHMWPE: radiation-induced modification of structure and properties |
| Annotation | Main idea: Ultrahigh Molecular Weight Polyethylene (UHMWPE) is used as a key component of total joint replacements (TJR) of big human joints such as hip and knee. Life-limiting factor of TJR is wear, which is a release of tiny, microscopic particles from UHMWPE during joint movements. Wear resistance of UHMWPE and lifetime of TJR can be increased by radiation-induced crosslinking and thermal treatment. Task: Irradiation of UHMWPE with accelerated electrons (collaboration with IPF Dresden), thermal treatment (remelting, annealing), characterization of original and modified samples by number of microscopic (SEM, TEM), diffraction (SAXS, WAXS), thermal (DSC) and spectroscopic (IR, ESR) methods. Measurement of mechanical properties (tensile testing, SPT) and wear resistance (POD; in collaboration with company Beznoska). Originality: Modification of UHMWPE by means of irradiation has been introduced approximately ten years ago. Nevertheless, the influence of irradiation on UHMWPE structure is a complex process and research in this field still continues. We are going to compare standard (single-step) irradiation with sequentional (several-step) irradiation and publish the results in im |
Institute of Macromolecular Chemistry AS CR, v.v.i.
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Czech Republic
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