Cationic polyacrylamide (CPAM) is a polyelectrolyte whose monomeric unit contains ionizable
cationic groups. In recent years, CPAM has received increasing attention owing to its unique
properties and superior performance compared with those of other conventional inorganic coagulants and organic polymeric
flocculants. This review examined the recent advances in CPAM synthesis. The synthetic mechanisms include direct
copolymerization and post-polymerization functionalization, and direct copolymerization mainly includes aqueous
solution polymerization, micellar copolymerization, dispersion polymerization, inverse emulsion polymerization, and
template polymerization. In addition, various choices for initiator preparation are summarized in this paper. In conclusion,
we propose a future research prospect relating to CPAM synthesis and its application in water treatment.
Keywords: Cationic monomer, cationic polyacrylamide, flocculation, initiation system, polyelectrolyte, synthesis method.
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