Enhancing Paper Quality with PolyDADMAC: A Versatile Cationic Polymer in the Papermaking Industry

In the modern papermaking process, the demand for efficient and multifunctional chemical additives has never been higher. Among these, PolyDADMAC (polydiallyldimethylammonium chloride) stands out as a high-performance cationic coagulant that plays a critical role across various stages of paper production. Our Azfc® PD40 series of PolyDADMAC is specially developed to meet the rigorous performance requirements of both fine paper and packaging board manufacturers.

Key Functions of PolyDADMAC in Papermaking

  1. Charge Neutralization and Pitch Control
    PolyDADMAC is primarily used as a cationic fixative to neutralize the anionic trash commonly found in pulp suspensions. It effectively interacts with negatively charged impurities, such as wood resin, fines, and filler particles, thereby stabilizing the wet-end chemistry and improving retention.raw?se=2025 06 24T09%3A09%3A40Z&sp=r&sv=2024 08 04&sr=b&scid=df11a5ab e56b 50c2 8202 f13972af38e4&skoid=30ec2761 8f41 44db b282 7a0f8809659b&sktid=a48cca56 e6da 484e a814 9c849652bcb3&skt=2025 06 23T15%3A37%3A47Z&ske=2025 06 24T15%3A37%3A47Z&sks=b&skv=2024 08
  2. Improved Retention and Drainage
    When used in combination with microparticle retention systems, PolyDADMAC helps form larger and more shear-resistant flocs, significantly improving filler and fines retention while enhancing drainage rates. This results in higher machine speeds and improved runnability.
  3. Enhanced Dry Strength and Formation
    By promoting better fiber-fiber bonding and filler distribution, PolyDADMAC can also contribute to a more uniform sheet formation and better surface properties, which are crucial for high-quality printability and converting.

Application Benefits

  • Suitable for a wide pH range (typically 4.5–8.5)
  • Fast cationic response for quick charge demand control
  • Excellent compatibility with other wet-end additives such as dry strength agents, cationic starch, and retention aids
  • Stable performance in both virgin and recycled fiber systems

Recommended Use

Azfc® PD40 is typically added to the stock preparation system, usually before or at the fan pump. The exact dosage depends on the system conditions and performance targets, typically ranging from 0.01% to 0.1% based on oven-dry pulp.

Scroll to Top

Get A Free Quote Now !

Contact Form Demo (#3)
If you have any questions, please do not hesitate to contatct with us.
Amazon Chemicals Limited