Blend Rheology Using the Palieme Model

The model due to Palieme accounts for the viscoelastic nature of the component phases and the particle size distribution in non-dilute emulsions [91]. The complex shear modulus of the blend can be expressed in terms of the complex moduli of each phase, the interfacial tension, and the radii of the dispersed droplets 

G m and Gj are the complex moduli of the blend, the matrix and the dispersed phase (droplets), respectively j i is the volume fraction of the dispersed phase corresponding to the particles with radius Rp 

When (ct /R) is set to zero in Eq. (3.8), the resulting expression will be denoted by Hq, and the corresponding prediction from Eq. (3.7) will be denoted by Gj. The contribution of the interface to the dynamic modulus can then be defined following Lacroix et al. [89] 

Knowing the dynamic storage and loss moduli of both components and those of the blend, and the droplet size distribution of the dispersed phase, it is possible to determine the equilibrium interfacial tension using Eqs. (3.7) and (3.8). 

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