RT Journal Article
T1 Monitoring fibrillation in the mechanical production of lignocellulosic micro/nanofibers from bleached spruce thermomechanical pulp
A1 Serra Parareda, Ferrán
A1 Tarrés, Quim
A1 Pèlach, M. Àngels
A1 Mutjé, Pere
A1 Balea Martín, Ana
A1 Monte Lara, María Concepción
A1 Negro Álvarez, Carlos Manuel
A1 Delgado Aguilar, Marc
AB The present work aims at assessing the main characteristics of lignocellulosic micro/nanofibers (LCMNF) from bleached thermomechanical pulp (BTMP) from spruce while glimpsing the suitability of cationic demand (CD) as effective monitoring parameter of the fibrillation process. For this, BTMP was mechanically refined at different times in a Valley beater, aiming at determining the required refining time and fiber length to be later fibrillated in a high-pressure homogenizer. It was found that 150 min treatment is required to avoid clogging in the pressure chambers of the homogenizer. The mechanically treated BTMP was gradually passed through a high-pressure ho-mogenizer, leading to four LCMNF with different fibrillation degree. The main characteristics of the LCMNF were determined, as well as the effect that high-pressure homogenization may generate onto the LCMNF structure. It was observed that CD is a robust parameter to monitor the fibrillation process, as it is a good indicator of the LCMNF characteristics. In addition, it was found that WRV may not be a good indicator of the extent of fibrillation for LCMNF, as the lignin content varies with the homogenization intensity. Finally, the limitations of CD as mon-itoring parameter and perspectives on this regard are provided to the reader.
PB Elsevier
SN 0141-8130
YR 2021
FD 2021-05
LK https://hdl.handle.net/20.500.14352/109482
UL https://hdl.handle.net/20.500.14352/109482
LA eng
NO Serra-Parareda, F., Tarrés, Q., Pèlach, M. À., Mutjé, P., Balea, A., Monte, M. C., Negro, C. & Delgado-Aguilar, M. (2021). Monitoring fibrillation in the mechanical production of lignocellulosic micro/nanofibers from bleached spruce thermomechanical pulp. International Journal of Biological Macromolecules, 178, 354-362.
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 29 abr 2025