ZUSAMMENFASSUNG :In der vorliegenden Arbeit wurde die Adsorption von Polystyrol aus Cyclohexan (25 "C, 36 "C), Dioxan (15 "C, 36 "C) und Methylathylketon (15 "C, 36OC), die Adsorption von Polyathylenglycol aus Wasser und Methanol (25°C) und die Adsorption von Polyvinylpyrrolidon aus Wasser (25 "C) an hochvakuumbedampften Chromspiegeln mit Hilfe der Ellipsometrie untersucht . Aus den gemessenen Schichtdicken, Schichtkonzentrationen und adsorbierten Mengen ist zu folgern, da13 das polare Polyathylenglycol (PAG) in prinzipiell anderer Weise adsorbiert als das unpolare Polystyrol. PdG adsorbiert in flach auf liegender entkniiuelter Form, das unpolare Polystyrol dagegen in kniiuelformiger Konformation.
SUMMARY :In the work presented, the adsorption of polystyrene (PS) from cyclohexane (25"C, 36"C), dioxane (15OC, 36°C) and methylethylketone (15"C, 36"C), the adsorption of polyethyleneglycol (PEG) from H2O and methanol (25°C) and the adsorption of polyvinylpyrrolidone from H2O ( 2 5 "C) was investigated by means of ellipsometry. Chrominium covered glass-slides, prepared by high-vacuum technic, were used as adsorbent. From the thickness, concentration and adsorbed amount measured it can be followed, that the polar PEG is adsorbed in a principle different manner than the unpolar PS. PEG prefers to adsorb in a flat uncoiled manner, while PS is adsorbed in a coil-form conformation.
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