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

Electrokinetic behavior and colloidal stability of polystyrene latex coated with ionic surfactants

“…In addition, at very low coverage (Γ NaDBS = 0.15 µmol/m 2 ) the mobility of the complex at high electrolyte concentrations was lower than that of the bare particles. This was also observed for nonionic surfactants on latex [14], and it was explained by means of the displacement of the share plane toward the bulk due to the chains present on the surface. At higher coverage, the net charge density of the particles increases leading to higher µ e values, finding a similar behavior to that found at pH 9.…”

“…Unlike nonionic covered polystyrene particles, for which the electrophoretic mobility decreases (in absolute value) as a result of the adsorption of surfactant [14], we can see that the charge of the ionic surfactant alters this result. We have observed that the mobility increases (in absolute value) by adsorbing surfactant in some cases.…”

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

“…A direct consequence of this interaction will be the change in the surfactant layer configuration, which passes from extended to flat. Experimental evidence of an enhanced steric stabilization in carboxyl and amidine latices as a consequence of this interaction appears in the literature (40)(41)(42).…”

Influence of added surfactant on particle flocculation in waterborne polymer–particle systems

“…The value of A s = 4 · 10 4 m 2 /mol is based on the average of the reported amounts of the adsorbed surfactant for SDS and C 12 E 8 on silica and PSL (1.8-3.5 lmol/m 2 ) found in earlier studies. [17][18][19][20][21][22] In the case of EHEC in combination with nonionic surfactants, c sb,i » 0 can be used. Because the cmc for C 12 E 8 is low (0.07 mM), the c s,i is totally dominated by the adsorption to the particles at particle concentrations >0.1%, which explains the results presented in Fig.…”