Nanocellulose–cationic starch– colloidal silica systems for papermaking: Effects on process and paper properties

Laboratory tests were conducted to better understand effects on the papermaking process and handsheets when recycled copy paper furnish was treated with combinations of nanofibrillated cellulose (NFC), cat-ionic starch, colloidal silica, cationic retention aid (cPAM; polyacrylamide). Dosage-response experiments helped define conditions leading favorable processing outcomes, including dewatering rates efficiency fine-particle during papermaking. Effects found depend addition amounts starch silica added system. It shown that presence a polymer additive such as essential in order achieve large strength gains simultaneous usage NFC.