6533b822fe1ef96bd127d720
RESEARCH PRODUCT
A Novel Gas Chromatographic Method to Measure Sorption of Dense Gases into Polymers
Alessandro GaliaOnofrio ScialdoneGiuseppe FilardoMohamed Abduljawadsubject
chemistry.chemical_classificationEnvironmental EngineeringChromatographyArgonGeneral Chemical Engineeringchemistry.chemical_elementSorptionPhase equilibriumPolymer processingSorptionSupercritical fluidsPolymerSettore ING-IND/27 - Chimica Industriale E Tecnologicachemistry.chemical_compoundchemistryVolume (thermodynamics)Carbon dioxidemedicineSolubilitySwellingmedicine.symptomFluorideBiotechnologydescription
A novel experimental approach to determine the solubility of gaseous compounds inside polymers is here described. The method is based on the gas chromatographic determination of the composition of the fluid phase at equilibrium with the polymer. To take into account the effect of the volume swelling on the measurement a suitable probe, nonabsorbable by the polymer, was added to the fluid phase. Under the adopted configuration the apparatus can operate up to 35 MPa and 80°C. This experimental technique has been used to determine the solubility of carbon dioxide in poly(vinylidene fluoride) using argon as a probe. The latter was chosen because it is negligibly absorbed by the polymer and does not significantly alter the chemical potential of CO2. The uncertainty of the method in the determination of the solubility was estimated for each experimental points by error analysis. © 2006 American Institute of Chemical Engineers AIChE J, 2006
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-06-01 |