Nanocellulose addition to recycled pulps in two scenarios emulating industrial processes for the production of paperboard

This study assesses the incorporation of nanocellulose in a paperboard feedstock emulating two scenarios industrial processes. It included production 170 g/m2 paperboard, using mixtures short-fiber and long-fiber fractions from recycled pulps with typical mill additives. In all cases, 3 wt. % was added to pulp suspensions. The first scenario involved three types addition mixture 78 long-fiber/22 pulps. second an unrefined long fiber produce multilayer paperboard. Drainage time physical-mechanical properties handsheets were evaluated. Nanocellulose improved mechanical cases. tensile burst indexes increased 19 28 Scenario 1 up 60 43 2, respectively. lower values for attributed effect retention system. A new system cationic polymer high charge density produced decreases 79 drainage time.