INVESTIGADORES
AREA Maria cristina
artículos
Título:
From pine sawdust to cellulose nanofibers
Autor/es:
EHMAN, N.; TARRÉS, Q.; DELGADO-AGUILAR, M.; VALLEJOS, M.E.; FELISSIA, F.; AREA, M.C.; MUTJE, P.
Revista:
CELLULOSE CHEMISTRY AND TECHNOLOGY
Editorial:
EDITURA ACAD ROMANE
Referencias:
Lugar: RUMANIA; Año: 2016 vol. 50 p. 361 - 367
ISSN:
0576-9787
Resumen:
Biorefinery technology is an actual alternative to petroleum based industry to produce energy, chemicals and materials. The conversion of forest and agricultural lignocellulosic residues to high value added products has become important because of their renewable nature and high availability as raw materials. The pine sawdust is a promissory candidate as raw material in a biorefinery. This waste from the primary industrialization of wood is available in large quantities and low cost, and is currently open-air burned. The aim of this study was to obtain nanofibrillated cellulose (CNF) from pine sawdust. Forthat, delignification methods for the bleaching of the raw material to kappa be low 1 were used. CNF was produced by the combination of chemical (TEMPO-oxidation) pretreatment and mechanical (homogenizer) desestructuration.The effect of different quantities of sodium hypochlorite in TEMPO-oxidation pretreatmentin the characteristics of resulting CNF was evaluated. The degree of polymerization, cationic demand, carboxyl rate, nanofibrillation yield was studied, as well as the specific surface and the diameter of the cellulose nanofibers was estimated. On the other hand, the effectiveness of CNF as reinforcement in papermaking and it cost of production also were studied.