Structural relaxation monitored by instantaneous shear modulus

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    Abstract

    This paper reports on aging of the silicone oil MS704 for sudden changes of temperature from 210.5 to 209.0 K and from 207.5 to 209.0 K studied by continuously monitoring the instantaneous shear modulus G [infinity]. The results are interpreted within the Tool-Narayanaswamy formalism with a reduced time definition based on a recently proposed expression for the relaxation time, where G [infinity] reflects the fictive temperature. All parameters entering the reduced time were determined from independent measurements of the frequency-dependent shear modulus of the equilibrium liquid.
    OriginalsprogEngelsk
    TidsskriftPhysical Review Letters
    Vol/bind81
    Udgave nummer5
    Sider (fra-til)1031-1033
    ISSN0031-9007
    StatusUdgivet - 1998

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