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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 119 (1983), S. 137-146 
    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: The diffusion coefficients of 1,2-dichloroethane and 1,4-dichlorobutane in poly(alkyleneterephthalate) melts were determined with a quartz spring sorption apparatus. Dichloroalkanes show in the polyester melts similar behaviour as alkane diols. In the range of small diffusant concentrations the diffusion coefficients are independent of melt viscosity.
    Notes: Mittels Sorptionsmessungen an einer McBainschen Waage wurden die Diffusionskoeffizienten von 1,2-Dichlorethan und 1,4-Dichlorbutan in Polyalkylenterephthalatschmelzen bestimmt. Dichloralkane weisen in Polyesterschmelzen ähnliches Diffusionsverhalten wie Alkandiole auf. Im Bereich niedriger Diffusantkonzentration sind die Diffusionskoeffizienten viskositätsunabhägig.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 229 (1995), S. 199-208 
    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 ringöffnende Polymerisation von ε-Caprolacton wurde mittels eines Mettler RC1 Reaktionskalorimeters untersucht. Im Bereich kleiner und mittlerer Monomerumsätze ist diese Methode erfolgreich für die Bestimmung des Verlaufs von Massepolymerisationen zu verwenden. Die durch kalorimetrische und gravimetrische Methoden ermittelten Ergebnisse wurden verglichen und der Verlauf der Polymerisation in Abhängigkeit von Reaktionsparametern (Initiator, Temperatur) diskutiert.
    Notes: The ring-opening polymerization of ε-caprolactone was investigated by means of the Mettler RC1 reaction calorimeter. In the range of small and medium monomer conversions this method can successfully be used for the determination of the course of the bulk polymerizations. The experimental results obtained by calorimetric and gravimetric method, respectively, are compared and the course of the polymerization is discussed in dependence on the reaction parameters (initiator, temperature).
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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