Abstract:

A new type of NaCS/PDMDAAC polyelectrolyte complex membrane prepared by interfacial reaction of sodium cellulose sulfate as polyanions and poly（dimethylallylammonium chloride）as polycations was proposed. The static contact angle of the polyelectrolyte complex（PELC）membrane surface was measured to characterize membrane wettability. The effects of concentration of polyelectrolyte，molecular weight，and reaction time on contact angle were investigated. It was found that NaCS/PDMDAAC PELC membrane was hydrophilic. Its contact angle decreased with the increasing concentration of NaCS and molecular weight of PDMDAAC，and increased with the increasing concentration of PDMDAAC and reaction time.