Physica A 392 (2013) 6206–6213 Contents lists available at ScienceDirect Physica A journal homepage: www.elsevier.com/locate/physa Description of the viscosity of honeys in the supercooled regime Adriana Andraca a , Patricia Goldstein a,* , Luis Felipe del Castillo b a Departamento de Física, Facultad de Ciencias Universidad Nacional Autónoma de México, Coyoacán, México, D. F. 04510, Mexico b Instituto de Investigaciones en Materiales Universidad Nacional Autónoma de México, Coyoacán, México, D. F. 04510, Mexico highlights • We study the dependence on temperature of viscosity of honeys in the glass transition region. • The model used to analyze data is a linear form for the WLF equation. • A master plot is obtained for different honeys exhibiting a corresponding state behavior. • The reference temperature that is considered has a similar value to the dynamic crossover temperature. article info Article history: Received 10 June 2013 Received in revised form 6 August 2013 Available online 20 August 2013 Keywords: Glass transition Honeys Viscosity Corresponding states Williams–Landel–Ferry equation abstract For several honeys from different countries, we study the dependence of the Logarithmic Shift Factor (LSF ) with temperature that obeys the Williams–Landel–Ferry equation. We find that the LSF may be expressed in terms of a linear equation. On the other hand, the viscosities of different honeys present a corresponding state behavior through a master plot in terms of an adimensional temperature. This kind of behavior has been reported for other glass formers. © 2013 Elsevier B.V. All rights reserved. 1. Introduction The glass transition and the relaxation processes that take place in supercooled liquids have been extensively studied for over thirty years. One of the most important issues that has been studied for different kinds of liquids is the rapid increase of the viscosity with temperature as the glass temperature T g is attained. Several empirical forms for the dependence of the viscosity with temperature for a supercooled liquid can be used, and the two most important equations are the Vogel–Fulcher–Tammann (VFT) [1–3] equation and the Williams–Landel–Ferry (WLF) [4] expression. The VFT equation is given by LSF ≡ log η(T ) η(T S ) = A - B T - T 0 (1) where LSF represents the Logarithmic Shift Factor, η is the viscosity, T s is a reference temperature, A and B are independent parameters and T 0 has been interpreted as the isentropic temperature, the temperature for which the configurational entropy of the liquid vanishes [5,6]. * Corresponding author. Tel.: +52 5556224969. E-mail addresses: adrianaag@ciencias.unam.mx (A. Andraca), patricia.goldstein@ciencias.unam.mx (P. Goldstein), lfelipe@unam.mx (L.F. del Castillo). 0378-4371/$ – see front matter © 2013 Elsevier B.V. All rights reserved. http://dx.doi.org/10.1016/j.physa.2013.08.013