Polystyrene latex zeta potential

Garda-Salinas M. J., Romero-Cano M. S., de las Nieves F. J.. Zeta potential study of a polystyrene latex with variable surface charge influence on the electroviscous coefficient. Progr Colloid Polym Sci (2000) 115 112-116. 

Criticize or defend the following proposition Zeta potentials for three different polystyrene latex preparations were calculated by the Helmholtz-Smoluchowski equation from electrophoresis measurements made in different concentrations of KCl.f... 

Figure 7.7 Zeta potentials (calculated from electrophoretic mobility data) relating to particles of different ionogenic character plotted as a function of pH in acetate-veronal buffer at constant ionic strength of 0.05 mol dm 3, (a) Hydrocarbon oil droplets, (b) Sulphonated polystyrene latex particles, (c) Arabic acid (carboxylated polymer) adsorbed on to oil droplets, (d) Serum albumin adsorbed on to oil droplets...

In brush cleaning, an alkaline chemistry such as NH4OH is often used to remove the particles such as particles of silica, alumina, glass, polystyrene latex (PSL), and silicon nitride from various wafers in the first brush. The basic chemistry is used mainly to increase the repulsive charge by the zeta potential between the particle and the substrate. 

The graft copolymers (25-26) have well-defined hydrophobic-hydrophilic regions, and are therefore ideally suitable for surface modification (coating) in aqueous media. Table 12 shows the result of coating of clean polystyrene latex particles (nanospheres) by the graft copolymers (25a-25d) in aqueous solutioa The coat layer thickness measured by Photon Correlation Spectroscopy (PCS) and Laser Doppler Anemometry (LDA) are in good agreement. They also correlate well with the zeta potential data [47]. 

Figure 9.4(a) Zeta potential as a function of the logarithm of the concentration of anionic surfactants adsorbed on to polystyrene latex sodium tetradecyl sulphate, NaDS, and O sodium decyl sulphate. The CMC for NaDS in water is shown by the arrow, (b) Shows... 

Figure 6.4 DLVO-based calculations of V(h) for aqueous dispersions of polystyrene latex particles, based on Equations 6.2 and 6.4, at various NaCI concentrations, as indicated. The corresponding zeta potentials (f) were taken from Vincent (1992). 

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