Abstract
We report on incoherent neutron scattering results in the glass-forming liquid di-2-ethylhexyl phthalate (DOP) (T g=184 K). We are particularly interested in the temperature dependence of (i) the elastic scattered intensity, (ii) the mean-square displacement and (iii) the shear viscosity. Our neutron scattering results are internally consistent and compatible with the existence of a dynamic instability at temperatures above T g, as predicted by the recent mode coupling theory. This is in agreement with recent independent measurements on the same liquid from dielectric relaxation and depolarized Rayleigh scattering. However, an alternative approach [9] based on free-volume arguments shows no discontinuity over a broad T-range.
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© 1993 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Floudas, G., Higgins, J.S., Burgess, A. (1993). Incoherent quasielastic neutron scattering study of a glass-forming liquid. A mode coupling interpretation. In: Ewen, B., Fischer, E.W., Fytas, G. (eds) Application of Scattering Methods to the Dynamics of Polymer Systems. Progress in Colloid & Polymer Science, vol 91. Steinkopff. https://doi.org/10.1007/BFb0116449
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DOI: https://doi.org/10.1007/BFb0116449
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Publisher Name: Steinkopff
Print ISBN: 978-3-7985-0952-8
Online ISBN: 978-3-7985-1678-6
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