INVESTIGADORES
BARBOSA Silvia Elena
congresos y reuniones científicas
Título:
Demixing of PP/PS Blends by Near Critical Selective Solubilization Raquel E. Martini, Silvia Barbosa and Esteban Brignole
Autor/es:
MARTINI, RAQUEL EVANGELINA; BARBOSA, SILVIA ELENA; BRIGNOLE, ESTEBAN ALBERTO
Lugar:
Orlando - EEUU
Reunión:
Simposio; International Symposium on Supercritical Fluids. ISSF 2005; 2005
Institución organizadora:
Universidades de Notre Dame, North Carolina yTexas (EEUU)
Resumen:
The polymer blends separation by traditional methods (Soxhlet) is very difficult because
of their high molecular weight molecules. In this work, a systematic study of PP/PS
blends demixing is presented. First, the selectivity of n-alkanes was explored at high
pressure and over a wide range of temperatures on pure polymers. From this study the
processing window for blend separation was assessed. Also, the influence of the blend
morphology and composition on the separation efficiency was analyzed. It was
demonstrated that the method proposed for blend separation is easy, rapid and accurate
for the systems analyzed.