Particle Deposition to Silica Surfaces Functionalized with Cationic Polyelectrolytes

Positively charged water-solid interfaces are prepared by adsorption of a cationic polyelectrolyte poly(diallyldimethylammonium chloride) (PDADMAC) from aqueous solutions to planar silica substrates. These substrates characterized atomic force microscopy (AFM), optical reflectivity, and streaming current measurements. By tuning the amount adsorbed polyelectrolyte, surface charge substrate can be systematically varied. further used study deposition sulfate latex nanoparticles, which is also accomplished reflectivity. This process found consistent with an extension random sequential (RSA) model in semi-quantitative fashion. Such studies were ascertain that obtained situ ex functionalization behave identical