Anionic Polyacrylamide (Paper Grade)
CAS Number: 9003-05-8
Anionic polyacrylamide (APAM) for paper grade is a high-molecular-weight polymer used as a retention and drainage aid in the wet end of papermaking. It works synergistically with cationic coagulants and microparticle systems to improve fine and filler retention, drainage speed, and paper formation. It also serves as a dry strength resin and flocculation aid in stock preparation.
Technical Specifications
| appearance | White powder or granules |
| solid content (%) | ≥ 90 |
| pH (0.1% solution) | 6.0–8.0 |
| degree of anionicity (%) | 20–40 |
| molecular weight (×10⁶ Da) | 8–20 |
Applications
- Retention and drainage aid in wet-end papermaking
- Dual-component microparticle retention system
- Dry strength enhancement for paper and board
- Flocculation in paper mill effluent treatment
- Stock preparation and fiber flocculation
Key Features
- Very high molecular weight for efficient bridging flocculation
- Compatible with cationic coagulants and microparticle systems
- Improves formation and two-sidedness of paper
- Reduces white water turbidity and BOD in effluent
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