Application as Papermaking Retention Agent of Water in Water Cationic Polycaylamide in Bleached Soda Reed Pulp

The application of water in water cationic polyacylamide emulsion (CPAM) was studied used in bleached soda reed pulp. The main effects, such as adding amount of CPAM, the dosage of sulfate aluminium, pH value of the bleached soda reed pulp, reaction time after adding the CPAM and the concentration of the electrolyte were discussed here in detailed. The optimal application conditions of CPAM in bleached soda reed pulp were finally gained-CPAM 0.04% relative to dry fiber, 2 minutes for reaction, whip velocity 200r/min, sulfate aluminium 3%relative to dry fiber, pH value 4.0 and sodium chloride 0 relative to dry fiber.