Effect of saturation adsorption of paper strength additives on the performance of paper

Abstract The use of paper dry strength additives is one the methods for producing packaging boards with a lower grammage while maintaining mechanical properties. In present work, papers were formed using dissolving grade kraft fibres, fibres and carboxymethylated cellulose (CMC) modified (C-kraft fibres), either cationic starch (CS), anionic polyacrylamide (APAM) or polyelectrolyte complexes (PECs). Fibres sheets characterized to evaluate how saturation adsorption different influences properties treated final handsheets. tensile index made from C-kraft was highest due capacity additives. Moreover, increased by 33–84 %, z-directional dramatically 46–139 %. Bending stiffness improved 2.6–25 combination CS APAM PECs resulted in significant improvement bending compared addition alone. Importantly, did not sacrifice density significantly. summary, knowledge gained current study expands understanding their relationship surface charge overall