Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/59493
Title: Bilayer biocomposites of PVOH/WPI/nano-silica treated with corona discharge
Keywords: Biocompósitos
Nanossílica
Filmes de biocamadas
Álcool polivinílico (PVOH)
Isolados de proteínas do soro de leite (WPI)
Descarga corona
Revestimentos de embalagens
Biocomposites
Nano-silica
Bilayer films
Polyvinyl alcohol (PVOH)
Whey protein isolates (WPI)
Corona discharge
Packaging coatings
Issue Date: 19-Oct-2022
Publisher: Society of Plastics Engineers
Citation: LARA, B. R. B.; ANDRADE, P. S.; OLIVEIRA, A. C. S.; GUIMARÃES JUNIOR, M.; MATOS, L. C.; TONOLI, G. H. D.; DIAS, M. V. Bilayer biocomposites of PVOH/WPI/nano-silica treated with corona discharge. Polymer Engineering & Science, Connecticut, v. 62, n. 12, p. 3923-3934, 2022. DOI: 10.1002/pen.26150. Disponível em: https://doi.org/10.1002/pen.26150. Acesso em: 24 set. 2024.
Abstract: In order to evaluate the influence of a different assembly of biocomposites of polyvinyl alcohol (PVOH), whey protein isolates (WPI), and nano-silica (NS), a bilayer film treated with corona discharge was produced through a two-step lamination. The first layer of PVOH/NS, treated with up to 90 s of discharge, and the second layer of WPI/NS, the bilayer films had their morphology, tensile strength, and water barrier investigated and compared to a single layer PVOH/WPI/NS film. Corona discharge increased the wettability of the first layer, improving the ability to interact with the second layer, thus increasing the adherence between these layers. Films treated with higher times of discharge showed a homogeneous transition between phases, suggesting compatibility, and adherence between layers. At 90 s of corona discharge treatment, bilayer films showed a tensile strength 72% higher than the bilayer film not treated and also 23% more resistant and 7.4 times more ductile than the single-layer film. The lamination process and corona treatment increase the affinity of water with film constituents, thus leading to a higher permeability. The use of corona discharge associated with the lamination of PVOH/WPI/NS biocomposites provides a bilayer film and produces a more resistant, flexible, and ductile biocomposite film for packaging.
Description: As licenças de acesso aberto aplicáveis a este artigo estão em conformidade com as políticas do periódico em que foi publicado, disponíveis no link: https://v2.sherpa.ac.uk/id/publication/6944. Consulta realizada em 24 de set. de 2024.
URI: https://doi.org/10.1002/pen.26150
http://repositorio.ufla.br/jspui/handle/1/59493
Appears in Collections:DCF - Artigos publicados em periódicos

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