Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/59113
Título: | Bioactive poly(L-lactic acid)-chitosan hybrid scaffolds |
Autor(es): | Mano, J. F. Hungerford, Graham Gómez Ribelles, José L. |
Palavras-chave: | Tissue engineering Biodegradable materials Hybrid scaffold Biomineralization Apatite SBF |
Data: | 2008 |
Editora: | Elsevier 1 |
Revista: | Materials Science and Engineering: C |
Resumo(s): | Poly(L-lactic acid)/Chitosan (PLLA/CHT) hybrid scaffolds were prepared by depositing CHT onto the pore walls in order to form a micro-structured low dense foam inside previously prepared PLLA scaffolds. The morphology and pore architecture of the scaffolds were evaluated by scanning electronic microscopy (SEM) and micro-computational tomography (micro-CT). The microstructure of the CHT fraction depends on its concentration in the solution used to impregnate the PLLA scaffolds. The water-Uptake capability of the CHT fraction permitted the production of calcium-phosphate precursors in the structure of the hybrid constructs, on dipping them into alternate phosphorous and Calcium Solutions. Bioactivity tests, using incubation protocols in a simulated body fluid with ion concentrations approximately equal to those of human blood plasma, allowed the observation of the apatite deposition within the hybrid scaffolds, especially the ones with a higher CHT content. This work shows that bioactive scaffolds, with potential to be used in bone tissue engineering, can be obtained by combining chitosan with PLLA porous structures, following a simple and fast pre-calcification protocol. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/59113 |
DOI: | 10.1016/j.msec.2008.03.005 |
ISSN: | 0928-4931 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | 3B’s - Artigos em revistas/Papers in scientific journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1-s2.0-S0928493108000489.pdf Acesso restrito! | 3,44 MB | Adobe PDF | Ver/Abrir |