info:eu-repo/semantics/article
Rheological studies on glycerol plasticized gelatin and Its blends with epoxidized soybean oil
Fecha
2019-01Registro en:
Ciannamea, Emiliano Manuel; Castillo, Luciana Andrea; Ruseckaite, Roxana Alejandra; Barbosa, Silvia Elena; Rheological studies on glycerol plasticized gelatin and Its blends with epoxidized soybean oil; Tech Science Press; Journal of Renewable Materials; 7; 1; 1-2019; 21-30
2164-6325
2164-6341
CONICET Digital
CONICET
Autor
Ciannamea, Emiliano Manuel
Castillo, Luciana Andrea
Ruseckaite, Roxana Alejandra
Barbosa, Silvia Elena
Resumen
Blends of gelatin (Ge) plasticized with varying amounts of glycerol (Gly), buffer solution pH 10 and epoxidized soybean oil (ESO) to enhance hydrophobicity were prepared by mixing and injection-molding. Blends were characterized by rheological tests and microscopy to select optimal conditions for scaling up their processing. The effect of each component on rheological response was analyzed using parallel plate geometry. Coating of gelatin specimens with PDMS during rheological tests led to reliable and reproducible results since water evaporation was prevented. A gradual increment in ESO concentration led to blends with increased degree of phase separation, as evidenced by optical and confocal microscopy. Limited compatibility between ESO and Ge increased viscosity at high ESO levels, but up to 10% Gly could be replaced with ESO without a significant variation of rheological behavior.