Polystyrene latex deposition onto polyethylene film consecutively treated with cationic and anionic polymer

The effects of treating polyethylene (PE) film by consecutive adsorption of poly(diallyldimethylammonium chloride), polyDADMAC, followed by poly(sodium p-styrene sulfonate), PSS, on the deposition rate of aqueous polystyrene latex were investigated with the impinging jet technique. Rapid initial deposition occurred on films treated with polyDADMAC; however, significant blocking occurred. Deposition decreased with the concentration of polyDADMAC used to treat the PE film.

Film treatment with polyDADMAC followed by PSS to give an adsorbed polyelectrolyte complex gave decreased deposition rates. The molecular weight of PSS was not a significant variable in the range 5400–1 200 000. It was concluded that PSS increased the electrostatic repulsion between the PE film and the latex particles.