Poly Dimethyl Diallyl Ammonium Chloride, PolyDADMAC, PDADMAC
Properties:
PolyDADMAC contains strong cationic group radicals and activated-adsorbent group radicals. It can destabilize and flocculate the suspended solids and the negative-charged water-soluble matters in the wastewater through electro-neutralization and bridging adsorption. It is very effective in flocculating, decoloring, killing algae, and removing organics.
PDADMAC enjoys a small dosage but can cause big flocs, rapid precipitation, and low turbidity residue. On the other hand, PDADMAC overcomes the shortcomings of inorganic flocculants, such as loose floc structure, high flotation and low density, high water content, and poor sedimentation caused by hydrolysis.
Poly dimethyl diallyl ammonium chloride is adaptable to a wide range of pH values, between 0.5~14. PDADMAC is odorless, tasteless, and harmless.
Poly(diallyl dimethyl ammonium chloride) solution (PDADMAC), as a cationic polyelectrolyte, is widely used in the field of flocculation. This substance is prepared through free radical polymerization of diallyl dimethyl ammonium chloride (DADMAC), with organic peroxides serving as the catalyst during the reaction process.
CAS No.:
26062-79-3
HS Code:
34024100
Molecular Formula:
(C8H16ClN)n
Structure Formula:
Specifications:
| Product Code | IR-101A | IR-101B | IR-101C | IR-101E | IR-081G | IR-081H | IR-081M | IR-081F |
|---|---|---|---|---|---|---|---|---|
| Appearance | Colorless to light-yellow viscose liquid | |||||||
| Solubility | Soluble easily in water | |||||||
| SNF Trademark | — | FL4520 | FL4620 | FL4820 | FL4530 | FL4535 | FL4440 | FL4540 |
| Effective content | 20%±1% | 20%±1% | 20%±1% | 20%±1% | 30%±1% | 35%±1% | 40%±1% | 40%±1% |
| Viscosity (25ºC), cps | 80~200 | 200~600 | 700~1000 | 1000~3000 | 1500~2500 | 3000~5000 | 1000~3000 | 8000~12000 |
| pH | 5.5~6.5 | 5.0~8.0 | 5.0~8.0 | 5.0~8.0 | 5.0~8.0 | 5.0~8.0 | 5.0~8.0 | 5.0~8.0 |
Uses:
When used alone, PDADMAC should be diluted to the concentration of 0.05%~0.5% (based on solid content). However, when PDDA is used to treat different sources of water or wastewater, the dosage is based on turbidity and water concentration.
The most economical dosage is based on the trial. The dosing spot and the mixing velocity should be carefully decided to guarantee that the chemical can be mixed evenly with the other chemicals in the water and the flocs can not be broken. Therefore, it is better to dose the product continuously.
PolyDADMAC can be used in dyeing and finishing auxiliaries as an advanced formaldehyde-free color-fixing agent and can form a film in the fabric and improve color fastness.
PolyDADMAC can be used in papermaking, coating, antistatic agent, AKD sizing promoter, and retention and drainage agent. PolyDADMAC is mainly used as standard titrant, anion-trapping agent, and retention aid in the paper industry.
PDMDAAC is applied to the coating of inkjet printing paper to improve the print quality and color firmness of the printed paper sheet and enhance the water resistance of the printed paper sheet, thus improving the premium feel of the inkjet printing paper.
PolyDADMAC also be used in decoloring and flocculation in water treatment (drinking and wastewater). PDMDAAC can be used not only as a flocculant but also as a bactericide. PDADMAC has a significant inhibitory effect on the growth of E. coli when the dosage is greater than 20mg/L.
PolyDADMAC can be used in daily chemicals as a shampoo carding agent, wetting agent, and antistatic agent.
PolyDADMAC can be used as a clay stabilizer, acid fracturing cationic additive, mud treatment agent, oily wastewater treatment agent, scale inhibitor, acidizing fluid additive, and plugging fluid in oilfield chemicals.
PolyDADMAC water treatment
PolyDADMAC mainly works in water treatment through three methods. First, it removes color by adsorption. It adsorbs colored impurities from the water. Second, it acts as a flocculant. It causes suspended particles to clump together. These flocs can then be easily removed by sedimentation or filtration. Third, it purifies the water. It kills bacteria and other microorganisms. It also causes microorganisms to form flocs, which can be removed from the water.
When using PolyDADMAC in water treatment, several points should be noted. First, the dosage depends on the type and concentration of pollutants in the water. Follow the manufacturer’s instructions. Perform testing to determine the appropriate amount. If used alone, prepare a dilute solution. The solid content is generally between 0.05% and 0.5%. Second, regarding temperature. The polymer remains stable over a wide temperature range. However, high temperatures may reduce its effectiveness. Third, stirring speed must be chosen carefully. It should ensure uniform mixing of the solution and the materials. At the same time, avoid breaking apart flocs. Finally, dosing is best done continuously. This helps maintain consistent treatment effects.
Synthesis：
The synthesis of Poly(diallyldimethylammonium chloride) (PolyDADMAC) typically involves two main stages: monomer synthesis and subsequent polymerization.
The monomer, diallyldimethylammonium chloride (DADMAC), is commonly prepared via a two-step reaction. First, dimethylamine reacts with ethylene oxide to form dimethyldichloroethylamine. This intermediate is then treated with hydrogen chloride to produce DADMAC.
Once prepared, the DADMAC monomer undergoes polymerization in an aqueous phase. Free radical initiators—such as persulfates or peroxides—are used, and the reaction proceeds at a temperature of approximately 50–80°C.
Throughout the process, pH, temperature, and reaction time must be controlled to regulate the polymer’s molecular weight and properties.
Ultimately, the desired PolyDADMAC is obtained through aqueous free radical polymerization. It is widely used in water treatment, flocculation, and related fields.
Hazard：
This polymer can cause allergic reactions. When handling it, wear gloves and protective clothing. It may also be flammable. Keep it away from open flames. Store it in a cool, dry place. If a spill occurs, clean it up immediately. Take steps to prevent contamination of water sources and soil.
Packing and Storage:
Packed in 200kg plastic drum or 1000kg/IBC drum or according to client order.
PolyDADMAC should be sealed and stored in a dry and cool place. This way, poly dimethyl diallyl ammonium chloride can be stored for two years without losing its effect. If stratification appears after the long-term storage, PolyDADMAC can be mixed before use.
Synonyms:
Poly Dimethyl Diallyl Ammonium Chloride, PolyDADMAC, PDADMAC, PDDA, PDMDAAC.
Note:
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