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Título: | Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films |
Palavras-chave: | Chitosan films Glutaraldehyde Glycerol Packaging market Filmes de quitosana Glutaraldeído Glicerol Mercado de embalagens |
Data do documento: | Jan-2021 |
Editor: | Wiley |
Citação: | OLIVEIRA, A. C. S. de; UGUCIONI, J. C.; BORGES, S. V. Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films. Journal of Food Processing and Preservation, Westport, v. 45, n. 1, e15060, Jan. 2021. DOI: 10.1111/jfpp.15060. |
Resumo: | Chitosan is a biodegradable polymer and could be applied as packaging. To make chitosan more competitive, plasticizers and cross-linking agents are added in films. The aim of this paper was to obtain and characterize films of chitosan without or with glutaraldehyde (0; 0.99 mg/150 ml) in different concentrations of glycerol (0, 10, 20, and 30%w/w), for improving the properties like tensile resistance and the water vapor permeability. The films were homogeneous, without phase separation, and with a similar chemical structure. The glutaraldehyde makes the chitosan partly hydrophobic, leading to glycerol saturation in samples with glutaraldehyde and 20 or 30% of glycerol. The Principal Component Analysis for the film with glutaraldehyde and 10% of glycerol presented 3.60 g.mm/kPa.day.m2 of water vapor permeability and 36.96 MPa of tensile resistance. The use of plasticizer and cross-linking in combination is promising to make chitosan film more competitive on the market of packaging. |
URI: | https://doi.org/10.1111/jfpp.15060 http://repositorio.ufla.br/jspui/handle/1/48003 |
Aparece nas coleções: | DCA - Artigos publicados em periódicos DFI - Artigos publicados em periódicos |
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