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https://hdl.handle.net/1822/31802
Título: | Development and characterization of hydrogels based on natural polysaccharides : policaju and chitosan |
Autor(es): | Soares, Paulo A. G. Bourbon, A. I. Vicente, A. A. Andrade, Cesar A. S. Barros Junior, Wilson Correia, Maria T. S. Pessoa Júnior, Adalberto Cunha, Maria G. Carneiro da |
Palavras-chave: | Chitosan Hydrogel characterization Policaju Rheology |
Data: | 2014 |
Editora: | Elsevier B.V. |
Revista: | Materials Science and Engineering C |
Citação: | Soares, Paulo A.G.; Bourbon, A.I.; Vicente, A.A.; Andrade, Cesar A.S.; Barros Jr., Wilson; Correia, Maria T.S.; Pessoa Jr., Adalberto; Carneiro-da-Cunha, Maria G. Development and characterization of hydrogels based on natural polysaccharides: Policaju and chitosan Materials Science and Engineering: C 42() 219-226, 2014. |
Resumo(s): | The development of hydrogels based on natural polysaccharides was investigated by preparing mixtures of policaju/chitosan at weight ratios of 1:4 and 2:3. Utilizing dynamic light scattering (DLS) techniques for these mixtures, an increase on the hydrodynamic particle radius was observed varying their pH from 3.0 to 12.0. Furthermore, a reduction of ζ-potential was also observed for the same pH interval. Following rounds of drying/hydration cycles at a specific pH value, hydrogel matrices were formed. The pore size distribution of these formed hydrogels was examined using scanning electron microscopy. Further FT-IR analyses confirmed a physical interaction between the polysaccharides policaju and chitosan. Swelling experiments revealed water uptake values, after 24h of immersion in water, close to 270% for 1:4, and 320% for 2:3 hydrogels. Finally, rheological measurements were then conducted in order to confirm hydrogel viscoelastic features. These results indicate a promising road to biomaterials fabrication and biomedical applications. Copyright © 2014 Elsevier B.V. All rights reserved. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/31802 |
DOI: | 10.1016/j.msec.2014.05.009 |
ISSN: | 0928-4931 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_17929_1.pdf | 1,13 MB | Adobe PDF | Ver/Abrir |