Citric acid as multifunctional agent in blowing films of starch/PBAT
Data(s) |
01/09/2011
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Resumo |
Citric acid was used as a compatibilizer in the production of starch and PBAT films plasticized with glycerol and processed by blow extrusion. Films produced were characterized by WVP, mechanical properties, FT-IR-ATR and SEM. WPV ranged from 3.71 to 12.73×10-11 g m-1 s-1 Pa-1, while tensile strength and elongation at break ranged from 1.81 to 7.15 MPa and from 8.61 to 23.63%, respectively. Increasing the citric acid concentration improved WVP and slightly decreased film resistance and elongation. The films micrographs revealed a more homogeneous material with the addition of citric acid. However, the infrared spectra revealed little about cross-linking esterification reaction |
Formato |
text/html |
Identificador |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000900005 |
Idioma(s) |
en |
Publicador |
Sociedade Brasileira de Química |
Fonte |
Química Nova v.34 n.9 2011 |
Palavras-Chave | #starch #polyester #compatibilization |
Tipo |
journal article |