White ledger is white-grade recycled pulp that replaces the bleached kraft pulp (BKP) that typically forms the top ply of duplex boards. However, sheets made from white ledger are inferior in strength compared with those made from virgin pulp. Therefore, it is necessary to select a proper additive in order to overcome the disadvantages of using white ledger. In this study, the physical properti...

Taking advantage of the high thickening capacity cellulose nanofibers in castor oil, sustainable lubricating oleogels were obtained. Methanol was used as mediator to transfer nanofibers, originally present a hydrogel, into vegetable oil. The effect pulp bleaching on oleogels’ thermo-rheological behavior analyzed. Viscous flow curves and small/large amplitude dynamic shear tests carried out both...

Abstract In this work, the efficiency of a polyelectrolyte complex (PEC) to retain different cellulose micro/nanofibers (CMNFs) during paper formation and improve physical properties recycled unbleached fiber was analyzed. CMNFs were obtained from commercial bleached eucalyptus pulp (BEP) using PFI refiner followed by chemical treatment with oxalic acid at two concentrations. Finally, fibrillat...