Rheology of colloids

G. Gillies and C.A. Prestidge Colloid Probe AFM Investigation of the Influence of Cross-Linking on the Interaction Behavior and Nano-Rheology of Colloidal Droplets. Langmuir 21, 12342 (2005). 

Several recent studies demonstrate convincingly the possibilities for adjusting the rheology of colloidal dispersions through the incorporation of polymer. Here we briefly review the effects of grafted polymer, adsorbing homopolymer, and nonadsorbing polymer. The literature abounds with other and more complicated phenomena. 

It Is not a very strong effect. To render it sizeable, relatively large values of

Einstein equation does not apply any more, because the particles begin to interact hydrodynamlcally. In addition, electrostatic Interaction between the spheres starts to play a role, and this feature, the secx>ndary electroviscous effect is also proportional to and tends to dominate the former. When studying the rheology of colloids, this second effect especially has to be considered. 

Uriev, N.B., and I. Ya Ladyzhinsky, Fractal Models in Rheology of Colloidal Gels, Colloids and Surfaces A Physicochem. Engineering Aspects 108 11 (19%). 

Solomon, M.J. et al.. Effect of adsorbed surfactants on the rheology of colloidal zirconia suspensions, Langmuir, 15, 20, 1999. 

The chapters in this book deal with specific research situations, firom both the experimental and theoretical points of view. To conceptually unify what appears to be a diverse collection of work on disparate systems, an overview chapter by William B. Russel serves as an introduction. This chapter reviews various phenomena such as flocculation, stabliliza-tion, phase separation, and rheology of colloidal particles in polymer solutions, which are all recognized as macroscopic manifestations of the short-range forces between polymer segments and colloid surfaces. 

William B. Russel Controlling the rheology of colloidal dispersions through the interparticle potential Ceramic Transactions, Vol. 12, Ceramic Powder Sdence IB (Garry L. Messing, Shin-ichi Hirano, and Hans Hausner, eds.) The American Ceramic Sodety, Westerville, Ohio (1990) 361-373... 

Solomon M.J., Saeki T, Wan M., Scales P.J., Boger D.V., Usui H. Effect of adsorbed surfactants on the rheology of colloidal zirconia suspensions. Langmuir 1999 15(1) 20-26 Stober W., Fink A., Bohn E. Controlled growth of monodisperse sUica sphaes in the micron size range. J. Colloid Interface Sd. 1968 26 62-69... 

A discussion on kinetic properties and characterization of colloid particles would not be complete without a few words about the rheology of colloids. 

In this chapter, the rheology of colloids has also been discussed and it was shown that very complex behaviours can be observed depending on the shape and concentration of the colloid particles. In addition, dispersions can show thixotropic (time-dependent) behaviour. The rheology of colloids is important for products such as shampoo, paint, foods and lotions. 

Laurati M, Egelhaaf SU, Petekidis G (2011) Nonlinear rheology of colloidal gels with intermediate volume fraction. J Rheol 55 673—706... 

Roth M, D Acunzi M, Vollmer D, Auernhammer GK (2010) Viscoelastic rheology of colloid-liquid crystal composites. J Chem Phys 132 124702... 

Laurati M, Petekidis G, Koumakis N, Caidinaux F, Schofield AB, Brader JM, Fuchs M, Egelhaaf SU (2009) Structure, dynamics, and rheology of colloid-polymer mixtures from... 

Erwin, B. M., Cloitre, M., Gauthier, M., and Vlassopoulos, D. 2010. Dynamics and rheology of colloidal star polymers. Soft Matter 6 2825-2833. 

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