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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 1491-1496 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The excess ultrasonic sound absorption in 1-propanol water mixtures has been measured from 45 kHz to 474 MHz and is shown to result from a coupling of the sound wave with the long-wavelength spectrum of the composition fluctuations. The results are shown to be in agreement with the fluctuation theories of Fixman, Romanov and Solovyev, and Kawasaki and the more recent theories of Kroll and Ruhland, and Bhattacharjee and Ferrell. It is further suggested that the large absorption observed in alcohol–water mixtures may be due to the presence of large associated groups, or clusters.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 67-68 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The monomer consisted of 30 per cent styrene and 70 per cent of a linear condensation polymer of maleic and phthalic acids with propylene glycol. The source of free radicals was 1 per cent methyl ethyl ketone peroxide. Polymerization was conducted at 80 ± 2 C at field strengths varying from ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 316-317 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A continuous current monitoring device4 is used to determine the dependence on temperature of the resistivity of the polymer. This instrument consists of a Keithley model 210 electrometer, a Keithley model 2008 decade shunt and a cell. The cell consists of two brass parallel plate electrodes ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 1280-1281 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Log-log plot of heat capacity versus temperature The parameters can be evaluated from experimental values of the low-temperature heat capacity by the procedure of Starkweather1. The observed Cp values are plotted against the absolute temperature on a logarithmic plot. This is placed over a ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 1002-1003 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Previous work with electrical volume-resistivity measurements1.2 has shown their usefulness in study ing reactions and transitions of cross-linked polymers. It has also been shown2 that a completely polymerized polymer will exhibit not only the maximum magni tude of resistivity but also the maximum ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 254 (1976), S. 945-945 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Rheologica acta 9 (1970), S. 439-446 
    ISSN: 1435-1528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Zusammenfassung Es wird eine neue Methode vorgestellt für die schnelle und fortlaufende Bestimmung des Elastizitäts- und Kompressions-Modul us polymerer Festkörper bei einer Druckbelastung. Normalerweise werden diese Eigenschaften durch unterschiedliche Methoden bestimmt. Durch Benutzung einer unterdimensionierten Probe in einem Standard-Kompressionsprüfgerät ist es möglich, beide Moduln an der gleichen Probe in einem einzigen Versuch zu ermitteln. Die Anfangsbelastung einer unterdimensionierten Probe führt zu einer Längenabnahme und einer Zunahme des Durchmessers. Aus diesen Änderungen läßt sich der Elastizitätsmodul berechnen. Sobald die Bohrung des Gerätes gefüllt ist, führt die Erhöhung des Druckes zu einer Volumen-Abnahme des Polymers, aus dem sich der Kompressionsmodul berechnen läßt. Beide Bestimmungen können in wenigen Minuten durchgeführt werden. Die Modulwerte stimmen im allgemeinen mit veröffentlichten Werten überein, und die für dasPoisson-Verhältnis ermittelten Werte liegen in dem erwarteten Bereich.
    Notes: Summary A new method is presented for the rapid and consecutive determination of theYoung's and bulk moduli of polymeric solids in compression loading. Usually these properties are determined by separate measurements. However, by using an undersized specimen in a standard bulk compressibility tester, it is possible to determine both moduli on the same specimen in a single test procedure. Initial loading of the undersized specimen results in a decrease in length and an increase in diameter. From these changes,Young's modulus may be calculated. Once the bore of the tester is filled, the application of additional pressure results in a decrease in the volume of the polymer from which the bulk modulus may be calculated. Both determinations may be made within minutes. The moduli values are in general agreement with published values and the calculated values for Poisson's ratio fall into the expected range.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 185 (1962), S. 63-65 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 27 (1972), S. 215-217 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 44 (1975), S. 181-184 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: No abstract.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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