Analysis of Polyethers by Isocratic HPLC with Universal Detectors IV. Comparison of Size Exclusion Chromatography and Liquid Adsorption Chromatography for the Analysis of Polypropylene glycols)
- 1 April 1995
- journal article
- research article
- Published by Taylor & Francis in International Journal of Polymer Analysis and Characterization
- Vol. 1 (1) , 35-47
- https://doi.org/10.1080/10236669508009705
Abstract
Liquid adsorption chromotography (LAC) on an analytical scale, as well as on a semi-preparative scale is used for the analysis of polypropylene glycols), (PPG), and its performance for the determination of molecular mass distributions was compared with that of size-exclusion chromatography (SEC). Semi-preparative LAC provides monodisperse standards of PPG up to a molecular mass of 1400, which are used to establish an accurate SEC calibration. The influence of preferential solvation in LAC is studied and a correction method using two universal detectors (density and refractive index) is presented.Keywords
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