Degradation of composite implants determined in creep tests

• Autorzy: Chłopek J. , Rosół P. , Morawska-Chochół A.
• Języki publikacji: EN

Abstrakty

EN

Investigations presented in ibis study show the effects of conditions simulating the human body, on the mechanical properties of biosorbable co-polymer of poly(lactide-co-glycolide) - PGLA, and its composites with short carbon fibres (PGLA/CF) and nano-particles of hydroxyapatite (PGLA/HAp). Materials were subjected to constant mechanical stresses (creep tests) in "in vitro" conditions (Ringer's solution). Their lifetimes were calculated on the basis of obtained results. Obtained results allows for determination of their suitability for medical applications. The longest lifetime values were obtained for composites reinforced with carbon fibre. The introduction of hydroxyapatite to polymer matrix shortened life-time in relation to PGLA but significantly enhanced its bioactivity. After the matrix material degradation the presence of bioactive particles facilitates the regeneration of deseased tissue. Since poly(lactide-co-glycolide) is a biosorbable material, and it is difficult to predict its long term behaviour on the basis of short-term tests, the long-term creep tests seem to be necessary.

Słowa kluczowe

EN

implants; creeps; resorbable polymers; composites; in vitro conditions

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2007
• Tom: Vol. 7, nr 2(12)
• Strony: 92--97
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Chłopek J.

autor

Rosół P.

autor

Morawska-Chochół A.

• AGH - University of AGH, University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Biomaterials, Krakow, Poland

Bibliografia

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