Adsorption of different amphiphilic molecules onto polystyrene latices

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

“…This amphoteric character is due to the synthesis conditions, where azo N,Ndimethylenisobutyramidine hydrochloride (AMDBA) was used as an initiator. These amphoteric polystyrene particles present a more hydrophobic surface than those synthesized with other initiators [6]. Their main characteristics are shown in Table 1.…”

“…A study of the electrokinetic behavior of such ionic surfactant-latex complexes was performed from two points of view. On the one hand, the electrophoretic mobility as a function of the adsorbed surfactant amount was analyzed, which gave information about different trends observed in the adsorption isotherm published in a previous paper [6]. On the other hand, the mobility of particles with different surfactant coverage was studied by increasing the electrolyte (NaCl) concentration.…”

Solid-Phase Extraction Followed by HPLC for the Determination of Phosphorus(V) and Arsenic(V)

“…The adsorption mechanism of polyoxyethylene-type nonionic surfactants onto polystyrene surfaces has been discussed in the field of surface and colloid chemistry. [21][22][23] According to these studies, the surfactant molecules bind their hydrophobic moieties on the polystyrene surfaces by the hydrophobic interaction, thus orientating their hydrophilic ethylene oxide chains toward the aqueous phase. Some organized structures, such as monolayer, hemisphere, and hemicylinder, have been proposed in the literature.…”

Neuritogenic Surfaces using Natural Product Analogs

“…[ 28 ] This compound offers several benefi ts such as ease of access and excellent neurite outgrowth inducing capabilities in the PC12 cell assay. [ 29,30 ] In addition, as amphiphiles [ 31 ] and polyphenols [32][33][34][35][36][37][38] are known to adsorb to surfaces, we therefore hypothesized that compound 1 might allow for the assembly of neuritogenic surfaces via an operationally simple dip-coating approach.Preliminary experiments were carried out in order to test this hypothesis. In a fi rst setting, a 1 × 10 −3 M solution of compound 1 in THF was mixed in a 1:10 ratio with a 0.01% aqueous solution of collagen.…”