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  • 1985-1989  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 169 (1989), S. 211-216 
    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: Die Kinetik der Freigabe von Diacetylfluorescin (DAF) aus Polymer-Membranen wurde untersucht. Die Membranen wurden aus Polystyrol und Polysulfon in „monolithischer“ Form hergestellt. Zur Ermittlung der Freigabegeschwindigkeit durch Hydrolyse von DAF bei 25°C wurde ein Fluoreszenz-Spektrophotometer benutzt. Die Untersuchung zeigte, daß die Freigabe einer Nullter-Ordnung-Kinetik folgt. Die Effekte verschiedener Beladung mit DAF und von Aceton auf die kontrollierte Freigabe wurden ebenfalls ausgewertet.
    Notes: The release kinetics of diacetylfluorescein (DAF) from the polymeric membranes has been studied. The polymeric membranes were made of polystyrene and polysulfone materials in a monolithic form. This work employed a fluorescence spectrophotometer to monitor the release rates by the hydrolysis of DAF at 25°C. The investigation exhibited that the release rates follow a zero-order kinetic scheme. The effects of different loadings of DAF and acetone on the controlled release rates were also exploited.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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