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Título: | Influence of Polymeric Blends on Bioceramics of Hydroxyapatite | Autor: | Gomes, Eduardo da Silva Lima, Antônia Millena de Oliveira Gavinho, Sílvia Rodrigues Graça, Manuel Pedro Fernandes Devesa, Susana Macêdo, Ana Angélica Mathias |
Palavras-chave: | hydroxyapatite; galactomannan; chitosan; polymeric blend; bioceramics | Data: | 2023 | Editora: | MDPI | Projeto: | This research was funded by FEDER funds through the COMPETE 2020 Program and National Funds through FCT—Portuguese Foundation for Science and Technology—under the project LISBOA-01-0247-FEDER-039985/POCI-01-0247-FEDER-039985, LA/P/0037/2020, UIDP/50025/2020, and UIDB/50025/2020 of the Associate Laboratory Institute of Nanostructures, Nanomodelling and Nanofabrication—i3N. S.R. Gavinho acknowledges FCT—Portuguese Foundation for Science and Technology—for the PhD grant (SFRH/BD/148233/2019). | Título da revista, periódico, livro ou evento: | Crystals | Volume: | 13 | Número: | 10 | Resumo: | Bioceramics are used to repair, rebuild, and replace parts of the human body, e.g., bones, joints and teeth, in the form of powder, coatings or prostheses. The synthetic hydroxyapatite [Ca10(PO4)6(OH)2 (HAP)] based on calcium phosphate has been widely used in the medical and dental areas due to the chemical similarity with the inorganic component of human bone tissue. In this work, hydroxyapatite nanocrystalline powders were synthesized by the solid-state reaction method and sintered with a galactomannan and chitosan blend. The bioceramics studied were prepared from 70%, 80% and 90% of hydroxyapatite with 30%, 20% and 10% of galactomannan and chitosan blends, respectively. The influence of the blend content on the bioceramics was investigated through structural, vibrational, thermal, morphological and dielectric characterizations. It was observed that the increase in the blend percentage promoted an increase in the grain size, which was followed by a decrease in the density and hardness of the samples. The sample with a higher amount of polymeric blend also presented a higher dielectric constant and higher losses. | URI: | https://hdl.handle.net/10316/111782 | ISSN: | 2073-4352 | DOI: | 10.3390/cryst13101429 | Direitos: | openAccess |
Aparece nas coleções: | I&D CEMMPRE - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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Influence-of-Polymeric-Blends-on-Bioceramics-of-HydroxyapatiteCrystals.pdf | 3.31 MB | Adobe PDF | Ver/Abrir |
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