I. Uneven Paper Formation? Anionic & Cationic PAM Acts as Papermaking Dispersants
Fiber flocculation and uneven sheet thickness are common quality defects in papermaking.
Anionic and cationic polyacrylamide (PAM), widely used as papermaking dispersants, effectively separate fibers and fillers. They create uniform slurry distribution, improve surface smoothness and raise finished product yield.
II. Why Conventional Dispersants Fail to Deliver Satisfactory Results
Many mills struggle with generic dispersants. Either fibers still agglomerate due to insufficient dispersion, or excessive dispersion hurts retention.
Improper molecular weight and surface charge make these chemicals incompatible with complex pulp systems. This leads to frequent web breaks and high reject rates on high-speed paper machines. Specialized anionic and cationic PAM solves this dilemma well.
III. Dispersion Functions of Anionic Polyacrylamide
Anionic PAM mainly disperses long fibers.
Its negative charges generate electrostatic repulsion between fibers. Fibers fully unfold and distribute evenly in slurry without flocculation.
It produces paper with uniform texture and consistent thickness. Meanwhile, it enhances drainage on the wire section and supports higher machine operating speeds.
IV. Dispersion & Auxiliary Functions of Cationic Polyacrylamide
Cationic PAM works better for short fibers and fillers.
It gently adsorbs fine fibers and fillers, stabilizing suspension without forming large flocs and reducing slurry sedimentation.
Additionally, it improves retention and cuts loss of fine materials. It balances fiber dispersion and substance retention.
V. Better Performance via Combined Use of Anionic and Cationic PAM
Many paper mills adopt blended anionic and cationic PAM in real production.
Anionic PAM provides primary dispersion to optimize paper formation. Cationic PAM stabilizes the system and boosts retention and drainage.
Their synergistic effect maintains excellent dispersion without raw material loss. The combination suits high-speed paper machines and various paper grades.
VI. Easy Application with No Adverse Impact on Paper Properties
Papermaking PAM dispersants feature simple preparation. Operators prepare solutions by standard dilution and perform continuous dosing.
The product dissolves readily without lump formation. It exerts no negative influence on paper brightness, strength or texture. It causes minimal foam, leaves no harmful residues and brings no corrosion to equipment. On-site staff can handle the whole process easily.
VII. Compatible with Diverse Paper Grades & Production Conditions
Anionic and cationic PAM fit printing & writing paper, packaging paper, tissue paper and specialty paper. It shows outstanding results especially on high-speed Fourdrinier machines. It effectively reduces web breaks, improves formation and lowers reject rates. It helps mills stabilize production and cut overall operating costs.