Control of size and viscoelastic properties of nanofibrillated cellulose from palm tree by varying the TEMPO-mediated oxidation time

Benhamou, Karima; Dufresne, Alain; Magnin, Albert; Mortha, Gérard; Kaddami, Hamid

doi:10.1016/j.carbpol.2013.08.032

Cited by 164 publications

(119 citation statements)

References 21 publications

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“…Similar results were also reported by others (Besbes et al, 2011, Benhamou et al, 2014Dufresne, 2012). The easier fibrillation of oxidized cellulose fibers results from various effects such as carboxyl groups which generate negative charges that bring repulsive forces between microfbrils (Saito et al, 2006) within the cell wall contributing to loosen the microfibril cohesion held by hydrogen bonding.…”

Section: Morphological Propertiessupporting

confidence: 93%

“…The nanofibrils with diameter ranging from 5 to 21 nm for CNF-POB and from 2 to 15 nm for CNF-POL were obtained. However, it is complicated to measure the CNF length from TEM and AFM images; therefore, it is difficult to determine the aspect ratio, which can affect the rheological properties (Ishii et al, 2011;Benhamou et al, 2014).…”

Section: Morphological Propertiesmentioning

confidence: 99%

“…It is also worth noting that in the above works (Lasseuguette et al, 2008;Shogren et al 2011;Benhamou et al 2014) plate-plate or cone-plate geometries were used. It can be assumed that the higher storage moduli of CNF suspensions oxidized at low reaction time, or those disintegrated less using mechanical treatment may appear due to the low geometry gap.…”

Section: Oscillation Measurementsmentioning

confidence: 99%

See 2 more Smart Citations

Effect of the oxidation treatment on the production of cellulose nanofiber suspensions from Posidonia oceanica : The rheological aspect

Bettaieb

Nechyporchuk

Khiari

et al. 2015

Carbohydrate Polymers

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Section: Morphological Propertiessupporting

confidence: 93%

Section: Morphological Propertiesmentioning

confidence: 99%

Section: Oscillation Measurementsmentioning

confidence: 99%

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Effect of the oxidation treatment on the production of cellulose nanofiber suspensions from Posidonia oceanica : The rheological aspect

Bettaieb

Nechyporchuk

Khiari

et al. 2015

Carbohydrate Polymers

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“…The chemical and enzymatic methods include acid hydrolysis (Gliozzi et al, 2014) and enzymeassisted hydrolysis (Hassan et al, 2014), respectively. A number of hybrid methods have also been applied including 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation followed by mild mechanical treatment (Benhamou et al, 2014), synthetic and electrospinning methods (Cramariuc et al, 2013) etc. These methods lead to the formation of different micro/nanofibrillar cellulose, depending on the raw material and the pretreatment method used.…”

Section: Introductionmentioning

confidence: 99%

Effect of homogenization and ultrasonication on the physical properties of insoluble wheat bran fibres

Hu¹,

Zhang²,

Adhikari³

et al. 2015

International Agrophysics

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A b s t r a c t. Wheat bran is rich in dietary fibre and its annual output is abundant, but underutilized. Insoluble dietary fibre often influences food quality negatively; therefore, how to improve the physical and chemical properties of insoluble dietary fibre of wheat bran for post processing is a challenge. Insoluble dietary fibre was obtained from wheat bran and micronized using high-pressure homogenization, high-intensity sonication, and a combination of these two methods. The high-pressure homogenization and high-pressure homogenization+high-intensity sonication treatments significantly (p<0.05) improved the solubility, swelling, water-holding, oil-holding, and cation exchange capacities. The improvement of the above properties by highintensity sonication alone was marginal. In most cases, the highpressure homogenization process was as good as the high-pressure homogenization+high-intensity sonication process in improving the above-mentioned properties; hence, the contribution of highintensity sonication in the high-pressure homogenization+high-intensity sonication process was minimal. The best results show that the minimum particle size of wheat bran can reach 9 μm, and the solubility, swelling, water-holding, oil-holding, cation exchange capacities change significantly.

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“…Benhamou et al (2014) demonstrated the control and optimized preparation of nanofibrillated cellulose (NFC) from the date palm tree by varying the TEMPO-mediated oxidation time. Rodionova et al (2013) applied the TEMPO-mediated system to Norway spruce and eucalyptus pulps to obtain nanofibers and nanofiber dispersions.…”

Section: Introductionmentioning

confidence: 99%

Improved Strength of Peroxide-Bleached Deinked Pulp after TEMPO-Mediated Oxidation at Medium Consistency

Hua¹,

Tong²,

Yang³

et al. 2015

BioResources

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Deinked pulp was pretreated using the 4-acetamido-2,2,6,6,-tetramethylpipelidine-1-oxyl radical (TEMPO)/NaBr/NaClO system and then bleached using hydrogen peroxide to achieve a medium pulp consistency. The effect of the amount of oxidant NaClO addition on the peroxide bleaching of deinked pulp was studied. The treated pulp was characterized using Xray diffraction (XRD) and scanning electron microscopy (SEM). The characterization of XRD and SEM showed that the treated pulp had a higher degree of crystallinity and more fibrillation than untreated pulp. Fiber quality analysis also revealed that the treated pulps had more fines and shorter fiber length than the untreated pulp. A handsheet test showed that the deinked pulps pretreated with the TEMPO system exhibited high tensile index values. The tensile index of the TEMPO pretreated pulp was 17% higher than that of the pulp bleached by hydrogen peroxide alone.

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Control of size and viscoelastic properties of nanofibrillated cellulose from palm tree by varying the TEMPO-mediated oxidation time

Cited by 164 publications

References 21 publications

Effect of the oxidation treatment on the production of cellulose nanofiber suspensions from Posidonia oceanica : The rheological aspect

Effect of the oxidation treatment on the production of cellulose nanofiber suspensions from Posidonia oceanica : The rheological aspect

Effect of homogenization and ultrasonication on the physical properties of insoluble wheat bran fibres

Improved Strength of Peroxide-Bleached Deinked Pulp after TEMPO-Mediated Oxidation at Medium Consistency

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