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Approaching a Low-Cost Production of Cellulose Nanofibers for Papermaking Applications

The use of cellulose nanofibers (CNF) as an additive in papermaking is an attractive alternative to improve paper’s strength. However, the costs of CNF production need to be competitive compared to other approaches aimed at reducing mechanical beating. Five different types of CNFs were prepared following different pretreatments: TEMPO-mediated oxidation at basic and neutral conditions, soft acid hydrolysis, enzymatic treatment, and mechanical beating. All of the pretreated fibers were later passed through a high-pressure homogenizer. The resulting CNFs were each applied to a papermaking pulp to investigate their reinforcing ability. Results indicated that the TEMPO-oxidized CNFs offered the highest increase at the same nanofiber content compared to the other types of CNFs. However, an analysis of the cost of increasing paper’s breaking length by 75% indicated that TEMPO-oxidized CNFs were more expensive than the other CNF grades, whereas CNFs from mechanical and acid pre-treatment offered similar increases at lower prices. The results indicated that CNFs of high fibrillation degree were not necessary to induce dramatic increases in paper strength. This finding offers a new possibility for the escalation of CNF production to industrial levels with competitive prices

The authors whis to aknowledge the finalcial support of the Spanish Economy and Competitiveness Ministry to the project CTM2011-28506-C02-01

© Bioresources, 2015, vol. 10, núm. 3, p. 5435-5355

North Carolina State University. Dept of Wood Paper Science, College of Natural Resources

Author: Delgado Aguilar, Marc
González Tovar, Israel
Tarrés Farrés, Quim
Alcalà Vilavella, Manel
Pèlach Serra, Maria Àngels
Mutjé Pujol, Pere
Date: 2015
Abstract: The use of cellulose nanofibers (CNF) as an additive in papermaking is an attractive alternative to improve paper’s strength. However, the costs of CNF production need to be competitive compared to other approaches aimed at reducing mechanical beating. Five different types of CNFs were prepared following different pretreatments: TEMPO-mediated oxidation at basic and neutral conditions, soft acid hydrolysis, enzymatic treatment, and mechanical beating. All of the pretreated fibers were later passed through a high-pressure homogenizer. The resulting CNFs were each applied to a papermaking pulp to investigate their reinforcing ability. Results indicated that the TEMPO-oxidized CNFs offered the highest increase at the same nanofiber content compared to the other types of CNFs. However, an analysis of the cost of increasing paper’s breaking length by 75% indicated that TEMPO-oxidized CNFs were more expensive than the other CNF grades, whereas CNFs from mechanical and acid pre-treatment offered similar increases at lower prices. The results indicated that CNFs of high fibrillation degree were not necessary to induce dramatic increases in paper strength. This finding offers a new possibility for the escalation of CNF production to industrial levels with competitive prices
The authors whis to aknowledge the finalcial support of the Spanish Economy and Competitiveness Ministry to the project CTM2011-28506-C02-01
Format: application/pdf
ISSN: 1930-2126
Document access: http://hdl.handle.net/10256/12678
Language: eng
Publisher: North Carolina State University. Dept of Wood Paper Science, College of Natural Resources
Collection: MICINN/PN 2012-2014/CTM2011-28506-C02-01
Reproducció digital del document publicat a: http://dx.doi.org/10.15376/biores.10.3.5345-5355
Articles publicats (D-EQATA)
Is part of: © Bioresources, 2015, vol. 10, núm. 3, p. 5435-5355
Rights: Tots els drets reservats
Subject: Fibres de cel·lulosa
Cellulose fibers
Materials nanoestructurats -- Propietats mecàniques
Nanostructured materials -- Mechanical properties
Paper -- Fabricació
Papermaking
Pasta de paper -- Procés d’elaboració
Pulping
Title: Approaching a Low-Cost Production of Cellulose Nanofibers for Papermaking Applications
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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