Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/11246
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Araújo, M. Alberta | - |
dc.contributor.author | Cunha, A. M. | - |
dc.contributor.author | Mota, M. | - |
dc.date.accessioned | 2010-12-14T11:53:02Z | - |
dc.date.available | 2010-12-14T11:53:02Z | - |
dc.date.issued | 2010-09 | - |
dc.identifier.citation | "Journal of Biomedical Materials Research : part A". ISSN 1549-3296. 94A:3 (Sept. 2010) 720-729. | por |
dc.identifier.issn | 1549-3296 | por |
dc.identifier.uri | https://hdl.handle.net/1822/11246 | - |
dc.description.abstract | This study aims at evaluating the influence of enzymatic degradation solution on the surface morphology and thermal properties of a poly(ethylene-vinyl alcohol) copolymer-corn starch thermoplastic blend (SEVA-C), as a function of immersion time. To perform this study, three different batches were assessed using SEVA-C samples of different thicknesses and a fixed weight of 1.6 g, immersed in alpha-amylase (50 u/L) up to 90 days at 37 degrees C. TGA, contact angle measurements, scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques were used. Three degradation mechanisms are considered in these systems: namely, mass loss due to plasticizer leaching (glycerol), starch enzymatic cleavage, and synthetic polymer fractions degradation. Enzymatic hydrolysis of the starch fraction and subsequent leaching from the internal bulk structure led to an increase in surface porosity, pore size, roughness, and to the development of small pits throughout the surface, as observed by SEM and AFM. | por |
dc.language.iso | eng | por |
dc.publisher | John Wiley and Sons | por |
dc.rights | openAccess | por |
dc.subject | MATERBI 1128RR | por |
dc.subject | Surface analysis | por |
dc.subject | Starch blend | por |
dc.subject | Alpha-amylase degradation | por |
dc.subject | Biomaterial | por |
dc.title | Changes on surface morphology of corn starch blend films | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
sdum.number | 3 | por |
sdum.pagination | 720-729 | por |
sdum.publicationstatus | published | por |
sdum.volume | 94A | por |
oaire.citationStartPage | 720 | por |
oaire.citationEndPage | 729 | por |
oaire.citationIssue | 3 | por |
oaire.citationVolume | 94A | por |
dc.identifier.doi | 10.1002/jbm.a.32725 | por |
dc.identifier.pmid | 20225217 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Journal of Biomedical Materials Research : part A | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Araújo_Journal of Biomedical Materials Research - Part A.pdf | 2,58 MB | Adobe PDF | Ver/Abrir |