Abstract
A broad study is reported here on the retention and fration of anionic polystyrenesulfonate (PSS) and cationic polyvinylpyridine (PVP) water-soluble polymers by flow field-flow fractionation (FFF) using a thin hydrophobic polypropylene membrane as the accumulation wall of the FFF channel. As background, the general role and impact of polymer adsorption in size exclusion chromatography and in flow FFF are compared. Adsorption at the accumulation wall in FFF systems is described, and explanations for its self-limitation and nonobtrusion are supported by experimental data
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