The pseudothermoosmotic pressure of a composite membrane system, constituted by 2 cellulose (I) [9004-34-6] membranes and an aq. polyethylene glycol [25322-68-3], approached ∼6.0 × 105 dyn cm-2 which was higher than that measured with simple I membranes. The thermodn. of irreversible processes was used to derive the composite membrane phenomenol. equations contg. both the classical thermoosmosis and the thermal diffusion. A value of 3.91 kcal mol-1 was calcd. for the apparent activation energy, indicating the diffusive nature of the solvent flow through the composite membrane.
Pseudothermoosmosis in a composite membrane system / D'Ilario, Lucio; M., Canella. - In: POLYMER JOURNAL. - ISSN 0032-3896. - STAMPA. - 9:3(1977), pp. 253-260. [10.1295/polymj.9.253]
Pseudothermoosmosis in a composite membrane system
D'ILARIO, LUCIO;
1977
Abstract
The pseudothermoosmotic pressure of a composite membrane system, constituted by 2 cellulose (I) [9004-34-6] membranes and an aq. polyethylene glycol [25322-68-3], approached ∼6.0 × 105 dyn cm-2 which was higher than that measured with simple I membranes. The thermodn. of irreversible processes was used to derive the composite membrane phenomenol. equations contg. both the classical thermoosmosis and the thermal diffusion. A value of 3.91 kcal mol-1 was calcd. for the apparent activation energy, indicating the diffusive nature of the solvent flow through the composite membrane.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
