Amphoteric Polyacrylamide (PAM) | Technical Product Specification
Amphoteric Polyacrylamide (Amphoteric PAM) is a high-molecular-weight copolymer synthesized from acrylamide, cationic, and anionic monomers. Containing both positive and negative ionic sites on a single polymer chain, its zwitterionic structure maintains stable chain conformation across a broad pH spectrum (pH 1–14). It neutralizes complex suspended solids, heavy metal ions, and emulsified oils in multi-component effluent systems where standard single-charge polymers fail.
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Amphoteric Polyacrylamide FlocculantAmphoteric Polyacrylamide (Am-PAM) is a functional synthetic polymer synthesized via the aqueous copolymerization of acrylamide with both cationic and anionic active monomers. The macromolecular...view more
Product Grades & Types
PAM-AM10 (High Cationic / Low Anionic)
Formulated for oily sludge conditioning and textile wastewater with net-positive charge demands.
PAM-AM50 (Balanced Charge Ratio)
Applied to municipal sewage treatment handling fluctuating industrial-municipal mixed influents.
PAM-AM90 (High Anionic / Low Cationic)
Utilized in mineral processing and high-salinity mining tailings containing multi-valent cations.
Key Properties
Zwitterionic Adaptability
Operates across acidic, neutral, and alkaline streams without charge inversion or precipitation.
Dual-Site Synergy
Simultaneously destabilizes negatively charged colloids (cationic sites) and positively charged metallic hydroxides (anionic sites).
Shear Resistance
High molecular weight backbone withstands high-shear centrifugal dewatering equipment.
Fast Dissolution
Controlled particle sizing (20–60 mesh) minimizes agglomeration ("fish-eyes") during automatic dosing.
Technical Specifications
|
Parameter |
Test Method |
PAM-AM10 |
PAM-AM50 |
PAM-AM90 |
|
Appearance |
Visual |
White Granular Powder |
White Granular Powder |
White Granular Powder |
|
Molecular Weight |
Ubbelohde Viscometer |
12–15 Million |
15–18 Million |
18–22 Million |
|
Cationic Degree |
Colloid Titration |
30–40% |
48–52% |
10–20% |
|
Anionic Degree |
Colloid Titration |
10–20% |
48–52% |
80–90% |
|
Solid Content |
Oven Drying (105°C, 2 h) |
≥ 88% |
≥ 88% |
≥ 88% |
|
Dissolution Time |
Stirring at 400 rpm |
≤ 60 min |
≤ 60 min |
≤ 75 min |
|
Residual Monomer |
HPLC |
< 0.05% |
< 0.05% |
< 0.05% |
|
Bulk Density |
Cylinder Method |
0.60–0.75 g/cm³ |
0.60–0.75 g/cm³ |
0.60–0.75 g/cm³ |
Wastewater Treatment: Coagulation of effluent containing mixed dyes, heavy metals (Ni, Cu, Zn), and surfactants.
Sludge Dewatering: Breaking stable oil-in-water emulsions in refinery and petrochemical processing.
Mining Tailings: Settling fine mineral slurries in ore separation circuits with high salt concentrations (NaCl, CaCl₂).
Paper Manufacturing: Internal retention aid and drainage accelerator in closed-loop systems using high-conductivity recycled white water.
Grade Selection Guide
Matrix Analysis
Measure stream TDS and pH. Select amphoteric PAM if pH fluctuates widely or salinity neutralizes single-charge polymers.
Jar Testing
Prepare 0.1% stock solutions using deionized water. Test grades at dosage increments of 1 ppm to 5 ppm.
Performance Evaluation
Assess settling velocity, supernatant clarity, and filter cake solid dryness.
Polymerization: Aqueous solution polymerization executed in stainless steel reactors with temperature control (±0.5°C).
Drying & Milling: Continuous fluidized bed drying followed by mechanical screening to ensure uniform 20–60 mesh sizing.
Testing Protocols: Viscosity measured via Brookfield viscometers; residual monomer quantified via HPLC; charge density verified by automated colloid titration.
Compliance & Traceability: Produced under ISO 9001 standards with REACH compliance documentation available; each lot retains archived samples for 24 months.
Packaging & Supply
|
Packaging Options |
25 kg multi-layer kraft paper bags with internal polyethylene liners; 750 kg to 1000 kg jumbo bags. |
|
Logistics |
Fumigation-free wooden pallets shrink-wrapped with UV-resistant film (18–20 metric tons per 20' FCL). Non-hazardous for transport under UN/IMO regulations. |
|
Storage |
Store in dry, well-ventilated areas (0°C–40°C). Shelf life: 24 months in sealed containers. |
Customization & Sample Testing
Custom Parameters
Molecular weight adjustable from 8 to 25 million Daltons based on specific shear and viscosity targets.
Sample Dispatch
500 g laboratory evaluation samples dispatched within 48 hours with COA and SDS.
Frequently Asked Questions
As one of the leading amphoteric polyacrylamide manufacturers and suppliers in China, we warmly welcome you to buy the best amphoteric polyacrylamide made in China here from our factory. For price consultation, contact us.
