Electrophoretic mobility rheological

Hunter and Nicol [5] studied the flocculation and restabilisation of kaolinite suspensions using rheology and zeta-potential measurements. Figure 21.11 shows plots of the yield value (cr ) and electrophoretic mobility (i) as a function of cetyl trimethyl ammonium bromide (CTAB) concentration at pH =9. increases in line with increases in CTAB concentration, reaching a maximum at the point where the mobility reaches zero (the isoelectric point, i.e.p., of the clay), and then decreases with further increases in CTAB concentration. This trend can be explained on the basis of flocculation and restabilisation of the clay suspension. 

The Penn State workplan is based on five tasks Task 1 to participate in round-robin particle electrophoretic mobility measurements, Task 2 to determine the nature of reactive sites on the silicon nitride surface, Task 3 to modify the chemistry of the silicon nitride interface using organic species, Task 4 to determine the rheological and dispersion properties of the nonaqueous silicon nitride suspensions, and Task 5 to ensure transfer technology to ORNL via meetings and reports. Each task is discussed in detail below. 

Table 1. Comparison between pore size estimates determined from rheological measurements and estimates determined from electrophoretic mobility measurements of DNA migration in the gel matrix...

Baselga, J. Llorente, M.A. Hernandez-Fuentes, I. Pierola, I.F. European Polymer Journal 1989, 25,471-475. Rheology (Equation 5) Electrophoretic mobility [45] Pr/Pe... 

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