INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Nano-biocomposites based on polylactic acid and poly(3-hydroxybutyrate) blends/modified clay.
Autor/es:
D'AMICO DAVID ALBERTO; STOCLET GRÉGORY; MIRI VALÉRIE; L. B. MANFREDI; V. P. CYRAS
Lugar:
Buenos Aires
Reunión:
Congreso; COMAT 2015; 2015
Resumen:
In this work, PLA/PHB blends were processed by melt fusion in order to obtain a material with improved properties compared to those of the pure polymers. Moreover, nanocomposites of these blends were obtained by the addition of a modified clay. The resultant materials were characterized by differential scanning calorimetric analysis (DSC), transmission electron microscopy (TEM), small angle X ray scattering (SAXS) and mechanical test. By DSC analysis, two glass transition temperatures were found, indicating no miscibility between PHB and PLA. A good dispersion of nanoclay platelets was observed by TEM. Different blend composition micrographs showed that the platelets of clay are preferentially located in the PHB phase. SAXS analysis revealed an increase in the long period of PHB lamellas. The elastic modulus enhanced with increasing the proportion of PLA in the blend.