Cationic copolymer acrylamide-dimethyldiallylammonium chloride [P(AM/DMDAAC)] was synthesized from acrylamide(AM)and dimethyldiallylammonium chloride(DMDAAC)by dispersion polymerization.The structures of polymers synt...Cationic copolymer acrylamide-dimethyldiallylammonium chloride [P(AM/DMDAAC)] was synthesized from acrylamide(AM)and dimethyldiallylammonium chloride(DMDAAC)by dispersion polymerization.The structures of polymers synthesized in different systems of dispersion were determined with infrared spectroscopy.The results showed that ethanol-H2O was the best system of dispersion.The characteristics of PDMDAAC-AM were studied by means of various instrumental analysis techniques,including transmission electron microscope(TEM)and Zetasizer 3000HSA.The results showed that the particle size of cationic PDMDAAC-AM synthesized in the ethanol-H2O system of dispersion was within the range of nanometer,and the dispersion polymerization in the emulsion state was helpful to dissipation of reaction heat.展开更多
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 con...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.展开更多
文摘Cationic copolymer acrylamide-dimethyldiallylammonium chloride [P(AM/DMDAAC)] was synthesized from acrylamide(AM)and dimethyldiallylammonium chloride(DMDAAC)by dispersion polymerization.The structures of polymers synthesized in different systems of dispersion were determined with infrared spectroscopy.The results showed that ethanol-H2O was the best system of dispersion.The characteristics of PDMDAAC-AM were studied by means of various instrumental analysis techniques,including transmission electron microscope(TEM)and Zetasizer 3000HSA.The results showed that the particle size of cationic PDMDAAC-AM synthesized in the ethanol-H2O system of dispersion was within the range of nanometer,and the dispersion polymerization in the emulsion state was helpful to dissipation of reaction heat.
文摘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.
