Electrokinetic characterization of highly sulfonated polystyrene model colloids

Adsorption of different amphiphilic molecules onto polystyrene latices

“…The synthesis conditions were based on recipes given in Refs. [6,7]. Lx(COOH) and Lx(anfo) were synthesized using styrene as the monomer.…”

Adsorption and Desorption of Triton X-100 in Polystyrene Particles with Different Functionality

“…The first latex, a negatively charge polystyrene latex [PS-S] was prepared, with potassium persulfate as initiator, in a discontinuous reaction, according to Kotera et al (14). The other two colloidal systems were synthesized using 4,4 -azo-bis (4- Surface charge density has been determined by conductimetric and potentiometric titration (16,(18)(19)(20)(21). Two different methods were used depending on the character of the surface chemical group.…”

Experimental Evidence of Hydration Forces between Polymer Colloids Obtained by Photon Correlation Spectroscopy Measurements

“…The energy barrier that theory can be written for the total interaction energy, V t prevents aggregation disappears when the ionic strength is increased. At high electrolyte concentrations, 1.3 M, these V t Å V e / V a / V hyd , [9] systems are also unstable. We used the Hamaker constant value normally obtained for this type of material, A Å 0.9 where, as usual, V e is the repulsive term, V a is the attractive 1 10 020 J ( 36 ) .…”