Chromatographische Fraktionierung und Trennung von Polystyrolen an Silicagel

Abstract

Silica gel as a filler of separation columns fractionates and separates dissolved polystyrenes. Fractionation means: Continuous distribution of the polymeric homologues among the successive fractions of the eluate. Separation means: Discontinuous distribution. In both cases the polymeric homologues with higher molecular weights are transported more rapidly through the columns than the polymeric homologues with lower molecular weigths. Fractionation and separation of polystyrenes are based on characteristics of the space system within the silica gel particles. With equal dimensions of the columns fractionation and separation grow with the pore size of the silica gel particles.