Poly-trimethyl-silyl-norbornene (PTMSN) is an high free volume glassy polymer whose thermodynamic and mass transport properties are very similar to those of poly-trimethyl-silyl-propyne (PTMSP): both these polymers are elected materials for membrane-based separation processes, because they offer a selectivity favorable to the more condensable vapors rather than to the light gases. Sorption, diffusion and swelling experiments were performed on PTMSN, using three different hydrocarbons (n-C4, n-C5, n-C6). The sorption processes showed initially a diffusion transport stage, characterized by an anomalous kinetic, followed by a wide relaxation stage, which gives a significant contribution to the total solubility. The solubility experimental data were successfully compared with the Nonequilibrium Lattice Fluid Model previsions, whose characteristic parameter were determined from a collection of infinite dilution solubility data.
Galizia M, De Angelis MG, Sarti GC (2009). CHARACTERIZATION AND MODELING OF THE ORGANIC VAPOUR TRANSPORT IN ADDITION-TYPE POLY (TRIMETHYLSILYL NORBORNENE). S.L. : AIDIC Servizi S.r.l..
CHARACTERIZATION AND MODELING OF THE ORGANIC VAPOUR TRANSPORT IN ADDITION-TYPE POLY (TRIMETHYLSILYL NORBORNENE)
GALIZIA, MICHELE;DE ANGELIS, MARIA GRAZIA;SARTI, GIULIO CESARE
2009
Abstract
Poly-trimethyl-silyl-norbornene (PTMSN) is an high free volume glassy polymer whose thermodynamic and mass transport properties are very similar to those of poly-trimethyl-silyl-propyne (PTMSP): both these polymers are elected materials for membrane-based separation processes, because they offer a selectivity favorable to the more condensable vapors rather than to the light gases. Sorption, diffusion and swelling experiments were performed on PTMSN, using three different hydrocarbons (n-C4, n-C5, n-C6). The sorption processes showed initially a diffusion transport stage, characterized by an anomalous kinetic, followed by a wide relaxation stage, which gives a significant contribution to the total solubility. The solubility experimental data were successfully compared with the Nonequilibrium Lattice Fluid Model previsions, whose characteristic parameter were determined from a collection of infinite dilution solubility data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
