Poly dimethyldiallylammonium chloride | PolyDADMAC
Poly(diallyldimethylammonium chloride) solution (PolyDADMAC or PDADMAC), is a cationic polyelectrolyte prepared through the radical polymerization of diallyldimethylammonium chloride (DADMAC) in the presence of a catalyst, typically an organic peroxide. It is widely used as a flocculant and coagulant chemical in various industrial applications.
PolyDADMAC contains strong cationic group radicals and activated-adsorbent group radicals, allowing it to destabilize and flocculate suspended solids and negatively charged water-soluble contaminants in wastewater via electro-neutralization and bridging adsorption. This makes it particularly effective in flocculating, decoloring, killing algae, and removing organic materials from water.
- Synonym: PDADMAC
- CAS Number: 26062-79-3
- MDL Number: MFCD00192409
- Linear Formula: (C8H16ClN)n
Chemical Appearance
The chemical has a color range from colorless to light yellow/amber.
Advantages of PDADMAC as a Coagulant Chemical
- Small dosage, big flocs: PolyDADMAC produces large flocs with a small dosage, enabling rapid precipitation and low turbidity residue.
- Low odor: It has a slight odor, making it more user-friendly.
- Water solubility: It is completely soluble in water, ensuring ease of application.
- Non-toxic and non-combustible: PDADMAC is non-toxic, not easily combustible, and safe for various uses.
- Effective coagulant chemical: As a strong coagulant chemical, it helps in efficient water purification and wastewater treatment without forming gel.
Applications of PDADMAC
- Water and wastewater treatment: PDADMAC is widely used as a flocculant and coagulant chemical in water treatment processes.
- Textile industry: It serves as a formaldehyde-free color-fixing agent.
- Paper industry: It is used as a paper conductivity agent, improving filler retention in paper making.
- Oilfield industry: PDADMAC acts as a clay stabilizer for drilling and as a cationic modifier for acid fracturing in water injection.
- Mining industry: It is used as a coagulant chemical and water flocculant for processing minerals like coal, taconite, gravel, and titanite.
- Cosmetic and personal care: PDADMAC functions as a conditioning agent in shampoos, conditioners, and skincare products.
- Antistatic and wetting agent: It is employed as a wetting agent and antistatic agent in various formulations.
As an excellent coagulant chemical, PDADMAC plays an important role in water treatment, enhancing flocculation and coagulation effect, and improving overall water quality.
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