Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/16111
Tipo do documento: Artigo
Título: PVA/polysaccharides blended films: mechanical properties
Autor: Silva, Fábio E. F.
Leal, Maria Carolina Bezerra Di Medeiros
Batista, Karla de Aleluia
Fernandes, Kátia Flávia
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.
País: Gra-bretanha
Unidade acadêmica: Instituto de Ciências Biológicas - ICB (RG)
Citação: SILVA, Fábio E. F. et al. PVA/polysaccharides blended films: mechanical properties. Journal of Materials, London, v. 2013, p. 1-6, 2013.  
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1155/2013/413578
Identificador do documento: 10.1155/2013/413578
URI: http://repositorio.bc.ufg.br/handle/ri/16111
Data de publicação: 2013
Aparece nas coleções:ICB - Artigos publicados em periódicos

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