Abstract
In order to gain information on the functionality type distribution and molar mass of bisphenol A based epoxy resins, on-line coupled two-dimensional chromatography was used. In the first chromatographic dimension, liquid chromatography at the critical point of adsorption separated the samples with respect to functionality. The functionality fractions were automatically transferred into size exclusion chromatography as the second dimension, where the fractions were separated with respect to their molar mass distribution. As a result of the two-dimensional experiment, the samples were mapped in contour plots, providing quantitative information on the interconnected parameters functionality, molar mass, and branching.
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