نتایج جستجو برای: cationic surfactants
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Individual and sequential adsorption of the anionic surfactant sodium dodecyl sulfate (SDS) and the nonionic surfactant Triton X-100 on cationic and anionic polystyrene latexes has been examined. Both latex samples, although charged differently (-16.2 and +11.0&mgr;C cm(-2)), must be considered hydrophobic polymer colloids. The adsorbed amounts of both surfactants on cationic and anionic latexe...
Dissolved air flotation (DAF), an effective treatment method for clarifying algae/cyanobacteria-laden water, is highly dependent on coagulation-flocculation. Treatment of algae can be problematic due to unpredictable coagulant demand during blooms. To eliminate the need for coagulation-flocculation, the use of commercial polymers or surfactants to alter bubble charge in DAF has shown potential,...
where R is the radius of the mica cylinders used for the measurement, Do=1.2 nm and Co=30 mN/m. Hydrophobic forces have also been observed with other cationic surfactants, such as dodecylammoniumhydrochloride (DAHCl), octadecyl-ammoniumhydrochloride (OAHCl) and dihexadecyl-dimethyl ammonium acetate (DHDAA), in equilibrium with mica and silica surfaces (2,3). The Co and Do values obtained with t...
in the present study, the binding isotherms for interaction of a homologous series of n-alkyltrimethyl ammonium bromides with bovine serum albumin (bsa) have been analyzed on basis of intrinsic thermodynamic quantities. in this regards, the intrinsic gibbs free energy of binding, agb(i,)„ has been estimated at various surfactant concentrations and its trend of variation for both binding sets ha...
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