RT Journal Article
T1 Influence of swelling on the efficiency of TEMPO reaction, nanofibril production and characterization
A1 Xu, Hongyu
A1 Balea Martín, Ana
A1 Blanco Suárez, María Ángeles
A1 Negro Álvarez, Carlos Manuel
AB This paper studies the effect of three swelling pretreatment processes (glycerol, alkaline, and molten salt hydrate) to improve the efficiency of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO)-mediated oxidation (TMO) to produce cellulose nanofibrils (CNFs). The novelty of this research lies in the presentation of a new approach that increases the process`s sustainability. The new pretreatment results in the reduction of both chemical reagents and energy consumption. Results demonstrate that pulps pretreated with molten salt hydrate exhibit a crystallinity index up to 50 % lower than the original fibers, while the carboxyl groups obtained during oxidation increase up to 30 %. The increase in oxidation efficiency allows us to obtain a highly fibrillated CNF with a 50 % dose reduction of TEMPO and NaBr at the same time that the energy consumption (kWh/kg) is reduced by 15%.
PB Elsevier
SN 2666-8939
YR 2024
FD 2024-12
LK https://hdl.handle.net/20.500.14352/109397
UL https://hdl.handle.net/20.500.14352/109397
LA eng
NO Xu, H., Balea, A., Blanco, A., & Negro, C. (2024). Influence of swelling on the efficiency of TEMPO reaction, nanofibril production and characterization. Carbohydrate Polymer Technologies and Applications, 8, 100556.
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 5 abr 2025