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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 35 (1974), S. 39-55 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: In the work presented, the adsorption of polystyrene (PS) from cyclohexane (25°C, 36°C), dioxane (15°C, 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 (25°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.
    Notes: In der vorliegenden Arbeit wurde die Adsorption von Polystyrol aus Cyclohexan (25°C, 36°C), Dioxan (15°C, 36°C) und Methyläthylketon (15°C, 36°C), die Adsorption von Polyäthylenglycol 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, daß das polare Polyäthylenglycol (PäG) in prinzipiell anderer Weise adsorbiert als das unpolare Polystyrol. PäG adsorbiert in flach aufliegender entknäuelter Form, das unpolare Polystyrol dagegen in knäuelförmiger Konformation.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 86 (1974), S. 451-451 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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