The kinetics of diethyldiallylammonium chloride (DEDAAC) polymerization and its copolymerization with acrylamide (AM) and acrylic acid (AA) initiated by ammonium persulfate (APS) in aqueous solution was studied by dilatometer method

and the apparent activation energy was measured.In the meantime

the compositions of copolymers of DEDAAC with AM or AA at low conversion were determined by elemental analysis

and the content of chloride ions of the DEDAAC-AM copolymer was determined by chloride ion-selective electrode method

and the reactivity ratios of monomers in copolymerization were obtained by Kelen-Tudos method.The results show that the polymerization rate equation for DEDAAC is RP=k［M］0.99［I］0.76 and the apparent activation energy is 77.00 kJ/mol

which displays that the chain termination reaction is according to the modes of mono- and bi-molecule termination

and the initiating process is independent of monomer concentration.When the monomer feed ratio n(DEDAAC)∶n(AM) is 4∶1

the copolymerization rate equation for DEDAAC with AM is RP=k［M］2.53［I］0.90

the apparent activation energy is 67.06 kJ/mol

and the values of reactivity ratios rDE and rAM are 0.31±0.02 and 5.27±0.53

respectively.While the copolymerization rate equation for DEDAAC with AA is RP=k［M］2.94［I］0.83 at the monomer feed ratio n(DEDAAC)∶n(AA)= 4∶1

the apparent activation energy is 70.07 kJ/mol

and the values of reactivity ratios rDE and rAA are 0.28±0.03 and 5.15±0.28

respectively.The copolymerization for DEDAAC with AM or AA is a non-ideal copolymerization

and the products are random copolymers.