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Qianmei Li, Guozhong Wu, Yaodong Liu, Yingshe Luo
A rheological study of binary mixtures of Ionic Liquid [Me3NC2H4OH]+[Zn2Cl5]- and ethanol
Appl. Rheol. 16:6 (2006) 334-339
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In this paper, by means of Advanced Rheometric Expanded System (ARES), oscillatory and steady shear behavior
of binary mixtures of a quaternary ammonium based ionic liquid
[Me3NC2H4OH]+[Zn2Cl5]- with ethanol (EtOH)
were determined at 25 C and 25-50 C, respectively. The effects of shear rate, temperature and concentration on
viscosity were elucidated sufficiently. It was found that the solutions show pseudo-plastic behavior at low shear
rate and Newtonian property at higher shear rate. The addition of EtOH caused a substantial decrease in viscosity
of the ionic liquid and the viscosity of binary mixtures could be described by an exponential equation.
Arrhenius Equation and Power Law equation were applied to describe the respective effects of temperature and
shear rate on viscosity. Activation energy derived from Arrhenius equation decreased with increasing the EtOH
fraction in the mixture.
► Cite this publication as follows:
Li Q, Wu G, Liu Y, Luo Y: A rheological study of binary mixtures of Ionic Liquid [Me3NC2H4OH]+[Zn2Cl5]- and ethanol, Appl. Rheol. 16 (2006) 334.
Youwen Liu, Bo Li, Qihong Fang
Interaction Between a Screw Dislocation and a Piezoelectric Circular Inhomogeneity with Interfacial Cracks in Viscoelastic Matrix
Appl. Rheol. 16:2 (2006) 102-109
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This paper attempts to investigate the problem for the interaction between a screw dislocation and a piezoelectric
circular inhomogeneity with interface cracks in viscoelastic matrix. Utilizing the Laplace transform
method, we find that the viscoelastic problem is first reduced to an associated elastic one. After solving the associated
elastic problem through complex function method, the solution of viscoelastic problem is obtained by
using the inverse Laplace transformation. The viscoelasticity of material is modeled by the combination of spring
and dashpot. Particularly, the boundary value problem for standard linear solid model is solved analytically. The
analytical results show that the force acting on the dislocation depends on the piezoelectric properties of inhomogeneity
and interfacial crack, and the magnitude of the force evolves toward a constant value as time elapses.
However, the viscoelasticity of material cannot alter the equilibrium position of the dislocation. Results presented
in this paper are in agreement with the previous solution as special cases.
► Cite this publication as follows:
Liu Y, Li B, Fang Q: Interaction Between a Screw Dislocation and a Piezoelectric Circular Inhomogeneity with Interfacial Cracks in Viscoelastic Matrix, Appl. Rheol. 16 (2006) 102.
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