6533b81ffe1ef96bd127705b
RESEARCH PRODUCT
Konstruktion eines vollautomatischen präzisionschromatographen auf der basis der phasendistributionschromatographie (PDC)
Georg S. Greschnersubject
Condensed Matter::Soft Condensed Matterchemistry.chemical_classificationChemistryThermodynamic equilibriumHigh polymerCalibration curvePhase (matter)Analytical chemistryPolymerdescription
The design of a fully automatized chromatograph based on Phase Distribution Chromatography (PDC) is presented and some of the most important results of the measurements shown. PDC represents a dynamical phase separation as column method: the separation of the polymer components in a PDC-column is based on thermodynamic-kinetical interactions of the mobile phase (the polymer to be analyzed) below the theta temperature of the system by a gel of the same high polymer situated on the surface of small glass beads. The sigmoidal shape of the measured PDC calibration curves can be explained by introducing a dynamical flow-equilibrium in the system sol/gel which highly differs from the thermodynamic equilibrium at low temperatures of the column.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1979-11-06 | Die Makromolekulare Chemie |