Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/31802
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Soares, Paulo A. G. | por |
dc.contributor.author | Bourbon, A. I. | por |
dc.contributor.author | Vicente, A. A. | por |
dc.contributor.author | Andrade, Cesar A. S. | por |
dc.contributor.author | Barros Junior, Wilson | por |
dc.contributor.author | Correia, Maria T. S. | por |
dc.contributor.author | Pessoa Júnior, Adalberto | por |
dc.contributor.author | Cunha, Maria G. Carneiro da | por |
dc.date.accessioned | 2014-12-10T13:03:33Z | - |
dc.date.available | 2014-12-10T13:03:33Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | 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. | por |
dc.identifier.issn | 0928-4931 | por |
dc.identifier.uri | https://hdl.handle.net/1822/31802 | - |
dc.description.abstract | 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. | por |
dc.description.sponsorship | Paulo A.G. Soares is a recipient of a scholarship from Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) and the author Ana I. Bourbon is a recipient of a fellowship from the Fundacao para a Ciencia e Tecnologia, POPH-QREN and FSE (FCT, Portugal) through grant SFRH/BD/73178/2010. Maria G. Carneiro-da-Cunha, Maria T.S. Correia, Cesar AS, Andrade and Adalberto Pessoa Jr express their gratitude to the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) for research grants. The authors are grateful to the Centro de Tecnologias Estrategicas do Nordeste (CETENE) of the Ministerio da Ciencia e Tecnologia for technical assistance and the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES/PROCAD) for financial support | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier B.V. | por |
dc.rights | openAccess | por |
dc.subject | Chitosan | por |
dc.subject | Hydrogel characterization | por |
dc.subject | Policaju | por |
dc.subject | Rheology | por |
dc.title | Development and characterization of hydrogels based on natural polysaccharides : policaju and chitosan | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.comments | CEB17929 | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 219 | por |
oaire.citationEndPage | 226 | por |
oaire.citationTitle | Materials Science and Engineering C | por |
oaire.citationVolume | 42 | por |
dc.date.updated | 2014-11-28T17:49:58Z | - |
dc.identifier.doi | 10.1016/j.msec.2014.05.009 | por |
dc.identifier.pmid | 25063113 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Materials Science and Engineering C | por |
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 |