RT Journal Article
T1 Micro- and Nanofibrillated Cellulose from Annual Plant-Sourced Fibers: Comparison between Enzymatic Hydrolysis and Mechanical Refining
A1 Aguado, Roberto
A1 Tarrés, Quim
A1 Pèlach, Maria Àngels
A1 Mutjé, Pere
A1 Fuente González, Elena de la
A1 Sánchez Salvador, José Luis
A1 Negro Álvarez, Carlos Manuel
A1 Delgado Aguilar, Marc
AB The current trends in micro-/nanofibers offer a new and unmissable chance for the recovery of cellulose from non-woody crops. This work assesses a technically feasible approach for the production of micro- and nanofibrillated cellulose (MNFC) from jute, sisal and hemp, involving refining and enzymatic hydrolysis as pretreatments. Regarding the latter, only slight enhancements of nanofibrillation, transparency and specific surface area were recorded when increasing the dose of endoglucanases from 80 to 240 mg/kg. This supports the idea that highly ordered cellulose structures near the fiber wall are resistant to hydrolysis and hinder the diffusion of glucanases. Mechanical MNFC displayed the highest aspect ratio, up to 228 for hemp. Increasing the number of homogenization cycles increased the apparent viscosity in most cases, up to 0.14 Pa·s at 100 s−1 (1 wt.% consistency). A shear-thinning behavior, more marked for MNFC from jute and sisal, was evidenced in all cases. We conclude that, since both the raw material and the pretreatment play a major role, the unique characteristics of non-woody MNFC, either mechanical or enzymatically pretreated (low dose), make it worth considering for large-scale processes.
PB MPDI
SN 2079-4991
YR 2022
FD 2022-05-09
LK https://hdl.handle.net/20.500.14352/72521
UL https://hdl.handle.net/20.500.14352/72521
LA eng
NO Ministerio de Economía y Competitividad (MINECO)
DS Docta Complutense
RD 6 abr 2025