Szczegóły publikacji
Opis bibliograficzny
Thermal properties of polyurethane-based composites modified with chitosan for biomedical applications / Monika SZLACHTA, Klaudia ORDON, Katarzyna NOWICKA, Kinga PIELICHOWSKA // Journal of Thermal Analysis and Calorimetry ; ISSN 1388-6150. — Tytuł poprz.: Journal of Thermal Analysis ; ISSN: 0368-4466. — 2021 — vol. 143 iss. 5, s. 3471–3478. — Bibliogr. s. 3478, Abstr. — Publikacja dostępna online od: 2020-01-21
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 133187 |
|---|---|
| Data dodania do BaDAP | 2021-03-22 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s10973-020-09283-w |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of Thermal Analysis and Calorimetry |
Abstract
The thermal properties of chitosan and hydroxyapatite (HAp)-crosslinked polyurethanes (PU) prepared in a two-step bulk polymerization were investigated. Synthesis of PU was carried out using 1,6-hexamethylene diisocyanate, poly(ethylene glycol) 2000 and dibutyltin dilaurate as a catalyst. Various molar ratios of chitosan and 1,4-butanediol were applied, and the effects of incorporating different HAp amounts and the chitosan-to-BDO ratio were studied. It was found that the thermal properties of PU materials depend on polysaccharides and bioceramics load, which was confirmed by differential scanning calorimetry and thermogravimetry. The glass transition temperature increases with increasing chitosan fraction. Similarly, the onset temperature of degradation increased with chitosan addition. On the other hand, the presence of ceramics did not show a significant impact on the thermal properties of PU composites. Successful polymerization and chain extension of the isocyanate groups with hydroxyl moieties from chitosan and HAp were confirmed by Fourier transform infrared spectroscopy, and the morphology was examined using scanning electron microscopy.
