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The key role of lignin in the production of low-cost lignocellulosic nanofibres for papermaking applications

The use of cellulose nanofibres (CNF) for the enhancement of paper’s mechanical properties has beenreported by many authors. Concretely, the available literature is mainly focused on TEMPO-oxidizedcellulose nanofibres. However, recent industrial research projects, in which LEPAMAP group has beeninvolved, have demonstrated that this type of nanocellulose has unaffordable production costs for thepapermaking industry. In this sense, the present work aims to produce low-cost lignocellulosic nanofi-bres (LCNF), finding some strong alternatives to TEMPO-mediated oxidation. For that, lignocellulosicnanofibres (LCNF) were produced from stone groundwood pulp (SGW) from pine after a chemical pulp-ing process (sodium hydroxide and antraquinone). The effect of lignin content was studied and controlledthrough bleaching steps and quantified. It was found that high lignin content makes nanofibrillation dif-ficult. The reinforcing effect of CNF was mechanically characterized by the addition of 3 wt% of CNF intodifferent papermaking pulps. The results showed that it is possible to obtain low-cost LCNF that providethe same increase in mechanical properties than TEMPO-oxidized CNF when they are used for paperreinforcement. It was also found that lignin plays an important role in the obtaining of LCNF by fullymechanical treatments, where lower lignin contents expedite the nanofibrillation

AcknowledgementWe wish to acknowledge the financial support of the SpanishEconomy and Competitiveness Ministry to the referenced projects:CTQ2012-3686-C02-01 and CTQ2013-48090-C2-2-R

© Industrial Crops and Products, 2016, vol. 86, p. 295-300

Elsevier

Manager: Ministerio de Economía y Competitividad (Espanya)
Author: Delgado Aguilar, Marc
González Tovar, Israel
Tarrés Farrés, Joaquim Agustí
Pèlach Serra, Maria Àngels
Alcalà Vilavella, Manel
Mutjé Pujol, Pere
Abstract: The use of cellulose nanofibres (CNF) for the enhancement of paper’s mechanical properties has beenreported by many authors. Concretely, the available literature is mainly focused on TEMPO-oxidizedcellulose nanofibres. However, recent industrial research projects, in which LEPAMAP group has beeninvolved, have demonstrated that this type of nanocellulose has unaffordable production costs for thepapermaking industry. In this sense, the present work aims to produce low-cost lignocellulosic nanofi-bres (LCNF), finding some strong alternatives to TEMPO-mediated oxidation. For that, lignocellulosicnanofibres (LCNF) were produced from stone groundwood pulp (SGW) from pine after a chemical pulp-ing process (sodium hydroxide and antraquinone). The effect of lignin content was studied and controlledthrough bleaching steps and quantified. It was found that high lignin content makes nanofibrillation dif-ficult. The reinforcing effect of CNF was mechanically characterized by the addition of 3 wt% of CNF intodifferent papermaking pulps. The results showed that it is possible to obtain low-cost LCNF that providethe same increase in mechanical properties than TEMPO-oxidized CNF when they are used for paperreinforcement. It was also found that lignin plays an important role in the obtaining of LCNF by fullymechanical treatments, where lower lignin contents expedite the nanofibrillation
AcknowledgementWe wish to acknowledge the financial support of the SpanishEconomy and Competitiveness Ministry to the referenced projects:CTQ2012-3686-C02-01 and CTQ2013-48090-C2-2-R
Format: application/pdf
Citation: 024982
ISSN: 0926-6690
Document access: http://hdl.handle.net/10256/12359
Language: eng
Publisher: Elsevier
Collection: MINECO/PE 2014-2016/CTQ2013-48090-C2-2-R
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.indcrop.2016.04.010
Articles publicats (D-EQATA)
Is part of: © Industrial Crops and Products, 2016, vol. 86, p. 295-300
Rights: Tots els drets reservats
Subject: Paper -- Fabricació
Papermaking
Lignocel·lulosa
Lignocellulose
Nanopartícules
Nanoparticles
Title: The key role of lignin in the production of low-cost lignocellulosic nanofibres for papermaking applications
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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