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  • 1
    ISSN: 1434-601X
    Keywords: 24.30.Cz ; 25.70−z
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Photons emitted in the28 Si+64 Ni and32 S+64 Ni reactions at 143 MeV and 156 MeV incident energy respectively, have been detected in coincidence with the ejected charged fragments. An array of 48 BaF2 γ-rays detector and 6 solid state silicon detector telescopes have been used. Photon energy spectra measured in the energy range from 2 to 20 MeV in coincidence with ejectiles coming from deep inelastic reactions, are consistent with statistical emission from the reaction products.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 38 (1992), S. 2649-2655 
    ISSN: 1572-8943
    Keywords: calorimetry of conductive polymers ; conducting polymers ; kinetics of polypyrrole ; polypyrrole ; thermodynamics of polypyrrole
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Mittels eines Reaktionskalorimeters wurden bei drei verschiedenen Temperaturen die Enthalpiewerte der Polymerisation von in Acetonitril gelöstem Pyrrol, unter der Anwendung von FeCl3 als Oxidationsmittel bestimmt. Aus den kalorimetrischen Daten ergibt sich, daß es sich bezogen auf Pyrrol um eine Reaktion erster Ordnung handelt. Bei den gleichen Temperaturen wurden auch die Geschwindigkeitskonstanten bestimmt. Unter Anwendung der Arrhenius'schen Gleichung haben wir auch die Aktivierungsenergie der Bildung dieses elektronenleitenden Polymers ermittelt.
    Notes: Abstract A reaction calorimeter has been used to determine at three different temperatures the enthalpy values for the polymerization of pyrrole dissolved in acetonitrile, by using FeCl3 as the oxidative agent. From the calorimetric data it has been found that the reaction is first-order with respect to the pyrrole. The rate constants at the same temperatures have also been determined. By using the Arrhenius equation we have obtained the activation energy for the formation of this electroconducting polymer.
    Type of Medium: Electronic Resource
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