Cationic Polyacrylamide (Paper Grade)
Cationic polyacrylamide (CPAM) for paper applications is a highly effective coagulant and retention aid used in the wet end of paper machines. Its positive charge allows it to interact strongly with anionic fiber fines, fillers, and colloidal substances in the stock, forming large flocs that improve retention, drainage, and paper machine runnability. It is also applied in wastewater treatment for sludge dewatering.
Technical Specifications
| appearance | White powder or granules |
| solid content (%) | ≥ 90 |
| pH (0.1% solution) | 4.0–7.0 |
| degree of cationicity (%) | 20–60 |
| molecular weight (×10⁶ Da) | 5–15 |
Applications
- Cationic retention and drainage aid in paper wet end
- Coagulation of anionic trash and colloidal substances
- Sludge dewatering in paper mill wastewater treatment
- Microparticle retention system (with colloidal silica)
- Dry strength improvement for board grades
Key Features
- High cationic charge for rapid coagulation of anionic colloidal substances
- Wide range of molecular weights and charge densities available
- Effective in high-conductivity and recycled fiber systems
- Dual function: retention aid and wastewater treatment coagulant
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