PolyDADMAC, short for Polydiallyldimethylammonium Chloride, is a synthetic water-soluble cationic polymer. It is primarily used as a coagulant and flocculant agent in water treatment processes to remove suspended solids, colloids, and organic substances from water.

The chemical structure of PolyDADMAC consists of repeating units of diallyldimethylammonium chloride (DADMAC) monomers, which have positive charges due to the presence of quaternary ammonium groups. These charged groups interact with negatively charged particles in the water, promoting aggregation into larger flocs that can be easily removed by sedimentation or filtration.

PolyDADMAC is known for its high efficiency across a wide range of pH levels and temperatures, making it suitable for various water treatment applications including drinking water purification, industrial wastewater treatment, and sludge dewatering. Additionally, it finds use in other industries such as paper manufacturing as a retention aid, and in oilfields to assist in separating oil from water.

Its properties include:

1. High molecular weight

2. Strong charge density

3. Excellent stability under normal conditions

4. Effective at low dosage rates

In summary, PolyDADMAC is a versatile and effective chemical compound widely employed in enhancing water quality through its ability to aggregate contaminants and improve the overall clarity of water.