Studying of the polymeric surface layer biodegradation of composite material of medical appointment

The processes of biodegradation in phosphate buffer with pH 7.4 of polymer polylactide or polyglycylidactide films for the subsequent creation of a layered composite with a biodegradable layer on the basis of a nickel-free shape memory alloy TiNbTaZr were studied. The structure of the samples was de...

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Published inJournal of physics. Conference series Vol. 1134; no. 1; pp. 12044 - 12049
Main Authors Nasakina, E O, Baikin, A S, Kaplan, M A, Danilova, E A, Kolmakova, A A, Baskakova, M I, Fedyuk, I M, Sudarchikova, M A, Sergiyenko, K V, Konushkin, S V, Sevost'yanov, M A, Kolmakov, A G
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2018
Subjects
Biodegradability
Biodegradation
Buffers
Composite materials
Disintegration
Laminates
Medical materials
Multilayers
Parameters
Polylactic acid
Shape memory alloys
Surface layers
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Summary:The processes of biodegradation in phosphate buffer with pH 7.4 of polymer polylactide or polyglycylidactide films for the subsequent creation of a layered composite with a biodegradable layer on the basis of a nickel-free shape memory alloy TiNbTaZr were studied. The structure of the samples was determined by SEM. In the case of polylactide, uniformly inhibited biodegradation is observed, the parameters of which almost do not depend on the molecular mass. Biodegradation of polyglycylidactide passes in two stages and significantly exceeds the parameters of lactide dissolution. Polylactide after 60 days of immersion in phosphate buffer loses its transparency, and glycolidactide disintegrates into separate tiny fragments.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1134/1/012044