RT Journal Article
T1 Correlation between rheological measurements and morphological features of lignocellulosic micro/nanofibers from different softwood sources
A1 Serra-Parareda, Ferran
A1 Tarrés, Quim
A1 Mutjé, Pere
A1 Balea Martín, Ana
A1 Campano, Cristina
A1 Sánchez Salvador, José Luis
A1 Negro Álvarez, Carlos Manuel
A1 Delgado-Aguilar, Marc
AB The transition of nanocellulose production from laboratory to industrial scale requires robust monitoring systems that keeps a quality control along the production chain. The present work aims at providing a deeper insight on the main factors affecting the rheological behavior of (ligno)cellulose micro/nanofibers (LCMNFs) and cellulose micro/nanofibers (CMNFs) and how they could correlate with their characteristics. To this end, 20 types of LCMNFs and CMNFs were produced combining mechanical refining and high-pressure homogenization from different raw materials. Aspect ratio and bending capacity of the fibrils played a key role on increasing the viscosity of the suspensions by instigating the formation of entangled structures. Surface charge, reflected by the cationic demand, played opposing effects on the viscosity by reducing the fibrils' contact due to repulsive forces. The suspensions also showed increasing shear-thinning behavior with fibrillation degree, which was attributed to increased surface charge and higher water retention capacity, enabling the fibrils to slide past each other more easily when subjected to flow conditions. The present work elucidates the existing relationships between LCMNF/CMNF properties and their rheological behavior, considering fibrillation intensity and the initial raw material characteristics, in view of the potential of rheological measurements as an industrial scalable characterization technology.
PB Elsevier
SN 0141-8130
YR 2021
FD 2021
LK https://hdl.handle.net/20.500.14352/109605
UL https://hdl.handle.net/20.500.14352/109605
LA eng
NO Serra-Parareda, F., Tarrés, Q., Mutjé, P., Balea, A., Campano, C., Sánchez-Salvador, J. L., Negro, C. & Delgado-Aguilar, M. (2021). Correlation between rheological measurements and morphological features of lignocellulosic micro/nanofibers from different softwood sources. International Journal of Biological Macromolecules, 187, 789-799.
NO Spanish Economy and Competitiveness Ministry
NO Ministry of Science and Innovation, Spain (MICINN) (Ref. FJC2019-040298-I)
DS Docta Complutense
RD 11 abr 2025