6533b826fe1ef96bd1284f98
RESEARCH PRODUCT
A comparative study between cosolvent and cononsolvent ternary polymer systems through the preferential adsorption coefficient
Agustín CamposRosa GarcíaVicente SoriaClara M. Gómezsubject
chemistry.chemical_classificationQuantitative Biology::BiomoleculesTernary numeral systemPolymers and PlasticsThermodynamicsSorptionPolymerGibbs free energyCondensed Matter::Soft Condensed MatterSolventchemistry.chemical_compoundsymbols.namesakeColloid and Surface ChemistrychemistryMaterials ChemistrysymbolsOrganic chemistryPolystyrenePhysics::Chemical PhysicsPhysical and Theoretical ChemistrySolvent effectsTernary operationdescription
Sorption equilibrium of polystyrene and poly (dimethyl siloxane) in mixed solvents has been monitored by means of the preferential adsorption coefficient experimentally determined from intensity light scattering measurements. The pairs of solvents used to dissolve each polymer sample have been selected for the purpose to perform cosolvent and cononsolvent ternary polymer systems. Flory-Huggins formalism including ternary interactions has been used to predict the sorption equilibrium for the cosolvent system and, for the first time, for cononsolvent ones. Moreover, the proportionality between binary and ternary interactions, recognized by Pouchly, is also corroborated for both ternary polymer systems. From a thermodynamic standpoint, the sorption equilibrium has been described by approaching the behavior of the “bulk solvent” to the binary liquid mixture through the excess Gibbs free energy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1993-01-01 | Colloid and Polymer Science |