Artículos de revistas
Investigation Of Cellulose Acetate Viscoelastic Properties In Different Solvents And Microstructure
Registro en:
European Polymer Journal. , v. 49, n. 9, p. 2730 - 2737, 2013.
143057
10.1016/j.eurpolymj.2013.06.007
2-s2.0-84881369650
Autor
Ferrarezi M.M.F.
Rodrigues G.V.
Felisberti M.I.
Goncalves M.D.C.
Institución
Resumen
This paper deals with the effect of solvent on the viscoelastic properties and microstructure of cellulose acetate (CA) by means of rheological measurements, dynamic-mechanical analysis and scanning electron microscopy. Acetone, acetic acid, dimethylacetamide (DMAc) and dimethylformamide (DMF) were used as good solvents and water as a non-solvent. The addition of water in the cellulose acetate/solvent mixture led to the development of an intense shear thinning behavior, as it caused the formation of CA agglomerates which were disrupted in a steady shearing condition. Apart from this, a three-dimensional elastic gel behavior in the CA/DMF/water and CA/DMAc/water solutions was observed during dynamical rheological analysis. 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