Molecular Weight Distribution of Polyphenylene Sulfide by High Temperature Gel Permeation Chromatography

Gel Permeation Chromatography . I . A New Method for Molecular Weight Distribution of High Polymers

Polystyrene gels crosslinked in the presence of dilucnts have been iliatie in tinc-iiii.sli bead forni suitable for packing into chromatographic rolurnns. A series of narrow molecular weight range pol) mer fractions w&s eluted through such columns with aromatic and chlorinated solvents. EfHuent concentrations were detected and recorded by a continuous differential refractoineter. The fractions ...

High Performance Gel Permeation Chromatography of Polymers

The determination of the molecular weight distribution by gel permeation chromatography requires the establishment of a molecular weight calibration and efficient columns in order to minimise chromatogram broadening. The separation process is described in terms of steric exclu— sion, retardation and partial exclusion mechanisms in order to show how the universal calibration method may be influe...

Analysis of lipoprotein profiles of healthy cats by gel-permeation high-performance liquid chromatography

Density gradient ultracentrifugation (DGUC) and gel electrophoresis are conventionally used to obtain lipoprotein profiles of animals. We recently applied high-performance liquid chromatography with a gel permeation column (GP-HPLC) and an on-line dual enzymatic system to dogs for lipoprotein profile analysis. We compared the GP-HPLC with DGUC as a method to obtain a feline lipoprotein profile....

Determination of the molecular mass of new L-fucose-containing glycosaminoglycan and its distribution by high-performance gel-permeation chromatography with laser light-scattering detection.

Gel permeation chromatography--multi-angle laser light scattering characterization of the molecular mass distribution of 'Pronova' sodium alginate.

510 Conclusions We have shown evidence for the bridging flocculation of PSL by p-LG. The change in surface charge of the PSL spheres resulting from adsorption of p-LG molecules correlates with the formation of aggregates bridged by protein molecules. To develop models of the kinetics of bridging flocculation, some measurements of aggregation as a function of time and temperature have been carri...