INVESTIGADORES
ALVAREZ vera Alejandra
artículos
Título:
PROCESSING AND CHARACTERIZATION OF THERMOPLASTIC STARCH/POLYCAPROLACTONE/COMPATIBILIZER TERNARY BLENDS FOR PACKAGING APPLICATIONS
Autor/es:
MARÍA PAULA GUARÁS; VERA ALVAREZ; LEANDRO LUDUEÑA
Revista:
JOURNAL OF POLYMER RESEARCH
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2015
ISSN:
1022-9760
Resumen:
Thermoplastic starch (TPS)/polycaprolactone (PCL) blends were obtained by melt mixing. First, the best formulation of thermoplastic starch (starch, plasticizer and additives) was studied. The obtained films were characterized by means of differential scanning calorimetry, DSC (melting temperature and crystallinity degree); thermogravimetric analysis, TGA (real composition of the blend and thermal stability); tensile tests (mechanical properties); infrared spectroscopy, FTIR (interactions between components); scanning electron microscopy, SEM (morphology); and water absorption tests. The effect of PCL/TPS ratio on the previously mentioned characteristics and properties were studied. In addition, the effect of using PCL modified with maleic anhydride as compatibilizer was also analyzed. An optimal compatibilizer content was found improving the mechanical properties and slowing down the degradation rate in soil of the blends. On the other hand, a slight increase in the water absorption of the blends was found in comparison with the non-compatibilized ones.
