Nanofibrillated cellulose from TEMPO-oxidized eucalyptus fibres: Effect of the carboxyl content

Besbes, Iskander; Alila, Sabrine; Boufi, Sami

doi:10.1016/j.carbpol.2010.12.052

Cited by 383 publications

(224 citation statements)

References 31 publications

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“…The results are expressed as ">95%" because, after centrifugation, no solid could be recovered from the bottom of the bottles used during the experiments. It is well known that the TEMPOoxidation pretreatment produces CNFs with a high degree of fibrillation, and this property is dependent on the amount of negatively-charged carboxylic groups formed on the fiber surface (Besbes et al 2011). The presence of such groups produces repulsion between fibers, facilitating the dismantling of the cellulose fibers' structure by shearing forces.…”

Section: Resultsmentioning

confidence: 99%

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

Delgado-Aguilar¹,

Tovar²,

Farrés³

et al. 2015

BioResources

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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 pretreatment 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.

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Section: Resultsmentioning

confidence: 99%

“…Next, the oxidation was carried out at alkaline (pH 10) and neutral (pH 7) conditions, according to methodologies by Saito et al (2007) and Besbes et al (2011), respectively.…”

Section: Tempo-oxidized Cnfs At Alkaline and Neutral Ph (T10-cnf And mentioning

confidence: 99%

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

Delgado-Aguilar¹,

Tovar²,

Farrés³

et al. 2015

BioResources

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“…The process of 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO) radical oxidizing the primary alcohol groups of monosaccharides to carboxylic groups was reported by Davis and Flitsch in 1993 which has become one of the most extensive research topics in the area of oxidation of cellulose [202]. The typical oxidation system for cellulose is TEMPO/NaBr/NaClO [203], which has been extensively used for the pretreatment of raw cellulose materials before mechanical disintegration [22,189,204,205]. The mechanism of oxidation reaction is shown in Figure 11 [86].…”

Section: Tempo Oxidationmentioning

confidence: 99%

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Xie

Yang

2018

International Journal of Polymer Science

219

128

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The recent strategies in preparation of cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) were described. CNCs and CNFs are two types of nanocelluloses (NCs), and they possess various superior properties, such as large specific surface area, high tensile strength and stiffness, low density, and low thermal expansion coefficient. Due to various applications in biomedical engineering, food, sensor, packaging, and so on, there are many studies conducted on CNCs and CNFs. In this review, various methods of preparation of CNCs and CNFs are summarized, including mechanical, chemical, and biological methods. The methods of pretreatment of cellulose are described in view of the benefits to fibrillation.

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“…Cellulose-based nanomaterials interact between them and with cellulosic fibers via hydrogen bonds (Taipale et al 2010) that form nanofilm coating layers (Schlosser 2008;Lavoine et al 2014) or increase the fiber network strength (Ahola et al 2008;Eriksen et al 2008). The advantages of nanocellulose materials are the low cost of their raw material, renewability, non-abrasive properties, high specific strength, and safer handling (Besbes et al 2011). They are obtained by mechanical defibrillation (cellulose nanofibrils, CNF), acid hydrolysis (nanocrystalline cellulose, NCC), and bacterial fermentation of different organic substrates (bacterial nanocellulose, BNC) (Eichhorn et al 2009;Osong et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Valorization of Corn Stalk by the Production of Cellulose Nanofibers to Improve Recycled Paper Properties

Balea¹,

Merayo²,

Fuente³

et al. 2016

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aCorn stalk, an agricultural waste, was valorized by the production of cellulose nanofibers (CNF), which were tested for improving recycled paper properties. CNF from eucalyptus kraft pulp (E-CNF) was used as a reference. Addition of 0.5% wt. CNF produced from corn organosolv pulp (C-CNF) to recycled paper increased the tensile index by 20%, whereas the same improvement with E-CNF was achieved at 1.5% wt. Tensile index was further enhanced by increasing the E-CNF, whereas C-CNF achieved its maximum effect at this dose. Different recycled furnish compositions were studied to evaluate C-CNF as a product additive. C-CNF improved tensile strength in all the different recycled furnishes studied. The tensile index improvement caused by C-CNF did not depend on the proportions of old newspaper and old magazine paper used. Addition of C-CNF to recycled corrugated board fluting increased the tensile strength, but to a slightly lower extent than in the case of recycled newsprint paper.

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Nanofibrillated cellulose from TEMPO-oxidized eucalyptus fibres: Effect of the carboxyl content

Cited by 383 publications

References 31 publications

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

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

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Valorization of Corn Stalk by the Production of Cellulose Nanofibers to Improve Recycled Paper Properties

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