PDADMAC
PDADMAC stands for poly(diallyldimethylammonium chloride). It is a synthetic cationic polymer and a quaternary ammonium polyelectrolyte. The polymer consists of repeating units derived from the diallyldimethylammonium chloride monomer, bearing quaternary ammonium groups and chloride counterions. PDADMAC is typically water soluble and exhibits a high charge density; its molecular weight can vary from 10^5 to over 10^6 g/mol depending on polymerization conditions.
Synthesis and properties: PDADMAC is produced by free radical polymerization of DADMAC monomer in aqueous solution,
Applications: It is widely used as a flocculant and coagulant aid in municipal and industrial wastewater treatment,
Mechanism: Flocculation arises from electrostatic attraction between the cationic polymer and negatively charged particles, including clays,
Safety and environmental considerations: PDADMAC polymers are generally considered irritants to skin and eyes and may