Rheological considerations

Based on the arguments presented thus far, it would seem that, for a given PSA, the work of adhesion, and thus the peel force, should decrease systematically as the surface energy of the release coating is decreased. Therefore, fluorochemical containing polymers should provide the lowest release forces. In practice, these generalities often do not hold, due to other factors, such as interfacial dynamics and rheological considerations. 

Ciro-Velasquez, H.J., Cunha, R.L., and Menegalli, F.C., Drying of Xanthan Gum using a two-dimensional spouted fluidized bed (2DSFB) with inert particles Performance and rheological considerations, Drying TechnoL, 28, 389-401, 2010. 

We shall thus, in a first division, consider the macromolecule itself, its mass, constitution, configuration and physical properties. In this main division nevertheless solutions of macromolecules and some of their properties already enter into the discussion based upon thermodynamical and rheological considerations on a model of the randomly kinked macromolecule. 

Stoupis, T., Stewart, G. G., Stafford, R. A. (2002). Mechanical agitation and rheological considerations of ale yeast slurry. Journal of the American Society of Brewing Chemists, 60, 58-62. 

It can be shown that many fermentation media behave like non-Newtonian fluids. Thereby (apparent) viscosity can be a function of either S and/or P and/or X concentration, exhibiting Newtonian and non-Newtonian behavior. The estimation of the rheological properties of biological fluids is summarized in the literature (e.g., Charles, 1978 Metz et al., 1979). Reuss et al. (1980) incorporated rheological considerations into process modeling. When viscosity is taken into account, clearly any correlation that does not contain the variation of viscosity during the fermentation must fail. An approach recently developed by Zlokarnik (1978), originally proposed for water and water-salt solutions, can be successfully used for this purpose (cf. Equ. 3.81) ... 

Desbrieres, J., Hirrien, M. and Ross-Murphy, S. B. (2000) Thermogelation of methylceUulose rheological considerations. Polymer, 41, 2451-2461. 

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