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  • 1
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 12 (1954), S. 20-34 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Different methods of radical-polymerization of acrylamide in solution and in bulk are described. The γ-rays induced polymerization yields products of extremely high molecular weight. The polymerization induced by Fenton's Reagent on the other hand leads to products of low intrinsic viscosity. Ultrasonic waves polymerize the monomer and depolymerize the polymer. The viscosity of a pure polymer and its fractions plotted against the concentration shows that these polyacrylamides in aqueous solution are homoeopolar molecularcolloids.
    Notes: Verschiedene Methoden zur Radikal-Polymerisation von Acrylamid mit und ohne Lösungsmittel werden beschrieben. Die durch γ-Strahlen ausgelöste Polymerisation ergibt sehr hochmolekulare Polymerisate; dagegen haben die mittels Fenton-Reagens erhaltenen Produkte nur sehr geringe spezifische Viskosität. Ultraschall wirkt auf das Monomere polymerisierend und auf das Polymere depolymerisierend. Aus den Viskositätskurven eines reinen Polymerisates und seiner Fraktionen ist zu schließen, daß solche Polyacrylamide in wäßriger Lösung als homöopolare Molekülkolloide vorliegen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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