RT Journal Article
T1 Increasing the Possibilities of TEMPO‐Mediated Oxidation in the Production of Cellulose Nanofibers by Reducing the Reaction Time and Reusing the Reaction Medium
A1 Sánchez Salvador, José Luis
A1 Campano Tiedra, Cristina
A1 Negro Álvarez, Carlos Manuel
A1 Monte Lara, María Concepción
A1 Blanco Suárez, María Ángeles
AB 2,2,6,6-Tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidation of cellulose is the most effective pretreatment to obtain highly fibrillated cellulose nanofibers (CNFs). However, the associated environmental impact and the high operational costs have limited its implementation at large scale. This study aims to improve the effectiveness of this pretreatment by reducing the oxidation time and reusing the reaction medium, with the ultimate objective of upscaling a more viable sustainable process. The results show the possibility of reducing the reaction time by 85% and 60% in the case of cotton and eucalyptus pulps, respectively, without altering the properties of the obtained CNFs (carboxyl groups, nanofibrillation yield, cationic demand, and morphology). The reuse of 75% of the reaction medium for ten cycles, do not alter the properties of the CNFs either. With this approach, the consumption of TEMPO and NaBr is reduced by 67%, while that of NaClO is decreased by 42% and 22% in the oxidation of cotton and eucalyptus cellulose, respectively. At the same time, the environmental concerns derived from the disposal of the catalysts are considerably reduced.
PB Wiley
SN 2366-7486
SN 2366-7486
YR 2021
FD 2021-01-29
LK https://hdl.handle.net/20.500.14352/125103
UL https://hdl.handle.net/20.500.14352/125103
LA eng
NO Sanchez‐Salvador, J. L., Campano, C., Negro, C., Monte, M. C., & Blanco, A. (2021). Increasing the Possibilities of TEMPO‐Mediated Oxidation in the Production of Cellulose Nanofibers by Reducing the Reaction Time and Reusing the Reaction Medium. Advanced Sustainable Systems, 5(4), 2000277.
NO The authors would like to acknowledge the Spanish Ministry of Economy and Competitiveness for the funding of the project CTQ2017-85654-C2-2-R and the Community of Madrid for funding the RETO-PROSOST-2-CM (P2018/EMT4459), as well as the support of Universidad Complutense de Madrid and Banco de Santander for the grant of J.L.S.-S. (CT17/17). The authors thank the Spanish National Centre of Electronic Microscopy for the support during image acquisition.
NO Ministerio de Economía y Competitividad
NO Comunidad de Madrid
NO Universidad Complutense de Madrid
NO Banco Santander
DS Docta Complutense
RD 26 feb 2026