Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/8461
Title: High moisture strength of cassava starch/polyvinyl alcohol-compatible blends for the packaging and agricultural sectors.
Authors: Guimarães Júnior, Mário
Botaro, Vagner Roberto
Novack, Kátia Monteiro
Teixeira, Fábio Gomes
Tonoli, Gustavo Henrique Denzin
Keywords: Biodegradable polymers
Plastic packages
Issue Date: 2015
Citation: GUIMARÃES JÚNIOR, M. et al. High moisture strength of cassava starch/polyvinyl alcohol-compatible blends for the packaging and agricultural sectors. Journal of Polymer Research, v. 22, p. 1-18, 2015. Disponível em: <https://link.springer.com/article/10.1007/s10965-015-0834-z>. Acesso em: 05 ago. 2017.
Abstract: This study aimed to evaluate the thermal, mechanical, physical, structural and morphological properties of new polymeric mixtures based on cassava starch (CMS) and polyvinyl alcohol (PVA) in the proportions of 0/100, 20/80, 40/60, 50/50, 60/40, 80/20 and 100/0 using the casting method. The polymer concentrations and choice of plasticizer were defined after preliminary tests. Mechanical tests revealed that blends became more flexible and ductile with increasing the PVA proportion. The spectroscopy analysis showed significant alterations on the positions and intensity of the bands in 2920, 1415, 1150, 1077, 927 and 848 cm−1, thus indicating a good compatibility among the polymers. Increase of the CMS proportion was reduced until reaching 45%of the values of water vapor permeability (WVP) in relation to PVA biofilm. Any of the combinations was enough to make the blend less permeable than the CMS biofilm. After increasing the CMS proportions, all blends were more soluble in water compared to PVA biofilm. The exception was the 20P80A blend. Besides representing a tendency of higher opacity, all blends with elevated CMS proportions were more thermally stable when compared to those with the same proportions of PVA. Results showed the potential of such blends for applications on sectors of plastic and agricultural packages.
URI: http://www.repositorio.ufop.br/handle/123456789/8461
metadata.dc.identifier.uri2: https://link.springer.com/article/10.1007/s10965-015-0834-z
ISSN: 15728935
Appears in Collections:DEQUI - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
ARTIGO_HighMoistureStrength.pdf4,05 MBAdobe PDFView/Open    Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.