PVA/polysaccharides blended films: mechanical properties
dc.creator | Silva, Fábio E. F. | |
dc.creator | Leal, Maria Carolina Bezerra Di Medeiros | |
dc.creator | Batista, Karla de Aleluia | |
dc.creator | Fernandes, Kátia Flávia | |
dc.date.accessioned | 2018-10-03T14:49:35Z | |
dc.date.available | 2018-10-03T14:49:35Z | |
dc.date.issued | 2013 | |
dc.description.abstract | Blends of polyvinyl alcohol (PVA) and angico gum (AG) and/or cashew gum (CG) were used to produce films by casting method. Morphological and mechanical properties of these films were studied and compared to the properties of a commercial collagen membrane of bovine origin (MBO). The films presented thickness varying from 70 to 140 μm (PVA/AG) and 140 to 200 μm (PVA/CG). Macroscopic analysis showed that a PVA/CG film was very similar to MBO regarding the color and transparency. The higher values of tensile strength (TS) and elastic modulus (EM) were observed in the PVA/AG HCl film. On the other hand, PVA/CG and PVA/CG-AG presented the highest value of percentage of elongation (E%). Pearson’s Correlation Analysis revealed a positive correlation (r = 0.83) between TS and EM and a negative correlation (r = −0.79) between E% and EM. The PVA/CG film presented mechanical properties very similar to MBO, with the advantage of a higher E% (11.96) than MBO (2.94). The properties of the PVA blended films depended on the polysaccharide added in the blend, as well as the acid used as a catalyst. However, all produced films presented interesting mechanical characteristics which enables several biotechnological applications. | pt_BR |
dc.identifier.citation | SILVA, Fábio E. F. et al. PVA/polysaccharides blended films: mechanical properties. Journal of Materials, London, v. 2013, p. 1-6, 2013. | pt_BR |
dc.identifier.doi | 10.1155/2013/413578 | |
dc.identifier.issn | 2314-4866 | |
dc.identifier.issn | e- 2314-4874 | |
dc.identifier.uri | http://repositorio.bc.ufg.br/handle/ri/16111 | |
dc.language.iso | eng | pt_BR |
dc.publisher.country | Gra-bretanha | pt_BR |
dc.publisher.department | Instituto de Ciências Biológicas - ICB (RG) | pt_BR |
dc.rights | Acesso Aberto | pt_BR |
dc.title | PVA/polysaccharides blended films: mechanical properties | pt_BR |
dc.type | Artigo | pt_BR |
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