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  • 1
    Electronic Resource
    Electronic Resource
    EPR study of the resin-asphaltene substances in a lube oil extract (1972)
    Springer
    Chemistry and technology of fuels and oils 8 (1972), S. 148-151 
    Details
    ISSN: 1573-8310
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary 1. EPR characteristics have been obtained for fractions of resins and asphaltenes from an Orsk refinery lube oil extract (Emba crude). 2. It has been shown that the magnetic properties of the materials investigated are determined mainly by condensed aromatic and heterocyclic structures; the greatest difference in EPR properties is observed for samples that differ markedly in these structural features.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00718988
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    EPR-Untersuchungen γ-bestrahlter chlorsubstituierter Poly(methacrylate) (1987)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 38 (1987), S. 114-119 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: γ-radiolysis of poly(methyl methacrylate) (PMMA) and chlorosubstituted poly(methacrylates) gives radicals with comparable nine-line-EPR spectra. The transformations of the molecules were discussed in light of the quantitative differences in the accumulation processes. EPR-spectra at liquid helium temperatures confirm the hypothesis of allyl radical accumulation in PMMA.
    Notes: Die im Poly(methylmethacrylat) (PMMA) und in chlorsubstituierten Poly(methacrylaten) radiolytisch erzeugten Radikale ergeben ähnliche EPR-Neunlinienspektren. Molekülumwandlungen zur Deutung der quantitativ unterschiedlichen Akkumulationsprozesse werden diskutiert. EPR-Spektren bei Heliumtemperaturen bestätigen die Hypothese der Akkumulation von Allylradikalen im PMMA.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1987.010380204
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    Paper (German National Licenses)
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