Dissolving pulp from eucalyptus sawdust for regenerated cellulose products

This study assesses the possibility of obtaining regenerated cellulose products (beads and films) from eucalyptus sawdust dissolving pulps produced by non-conventional processes, compared with a commercial pulp as reference. Eucalyptus were obtained soda pulping followed two TCF sequential bleaching processes OOpZ, OOp, cold extraction. The characterization involved alpha-, beta- gamma-cellulose content, alkali solubility 10 wt% (S10), 18 NaOH (S18) aqueous solutions, degree polymerization. Fock´s method was used to measure reactivity in 9 solution at − 5 °C evaluate capacity. Dissolving presented high content (> 93%, expressed α-cellulose) good (almost 8%). adequate raw materials for dissolution methods: direct NaOH/urea carbamate solution. sequence OOpE (where E is an alkaline extraction) more economically feasible straightforward produce than OOpZE. experimental showed expected characteristics obtain products. However, it necessary deepen producing films enhanced mechanical properties pulps, solvents, coagulation, regeneration conditions.