Preparation and characterization of new cellulose nanocrystals from marine biomass Posidonia oceanica

Bettaieb, Fedia; Khiari, Ramzi; Hassan, Mohammad L.; Belgacem, Mohamed Naceur; Bras, Julien; Dufresne, Alain; Mhenni, Mohamed Farouk

doi:10.1016/j.indcrop.2014.12.038

Cited by 112 publications

(58 citation statements)

References 58 publications

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“…The average diameter and length of all extracted CNC samples were determined by analyzing the high-magnification TEM images (Figure 2.a, c, e) using digital image analysis (Image J) [12], which confirmed that the CNC were extracted at nanometric scale. From this analysis, an average diameter of 9.1 ± 3.1, 7.6 ± 3.4 and 5.2 ± 2.9 nm, and an average length of 315.7 ± 30.3, 294.5 ± 29.1 and 285.4 ± 36.5 nm were measured for CNC30, CNC40 and CNC80, respectively.…”

Section: Tem Observations Of Cncmentioning

confidence: 62%

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Reuse of red algae waste for the production of cellulose nanocrystals and its application in polymer nanocomposites

Achaby

Kassab

Aboulkas

et al. 2018

International Journal of Biological Macromolecules

187

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phone (+2126) 620 10 620 Highlights  Cellulose nanocrystals (CNC) were successfully extracted from red algae waste  CNC exhibit a needle-like shape and a diameter of 5-9 nm, and a length of 289-315 nm  PVA nanocomposite films with different CNC contents were prepared by solvent-casting  Nanocomposites with high mechanical performance and good transparency were obtaine Version postprintComment citer ce document : El Achaby, M., Kassab, Z., Aboulkas, A., Gaillard, C., AbstractRed algae is widely available around the world and its exploitation for the production of agar products has become an important industry in recent years. The industrial processing of red algae generates a large quantity of solid fibrous wastes, which constitutes a source of serious environmental problems. In the present work, the utilization of red algae waste as raw material to produce high-quality cellulose nanocrystals (CNC) has been investigated, and the ability of the as-isolated CNC to reinforce polymer has been studied. Red algae waste was chemically treated via alkali, bleaching and acid hydrolysis treatments, in order to obtain pure cellulose microfibers and CNC. The raw waste and the as-extracted cellulosic materials were successively characterized at different stages of treatments using serval analysis techniques. It was found that needle-like shaped CNC were successfully isolated at nanometric scale with diameters and lengths ranged from 5.2 ± 2.9 to 9.1 ± 3.1 nm, and from 285.4 ± 36.5 to 315.7 ± 30.3 nm, respectively, and the crystallinity index ranged from 81 to 87 %, depending on the hydrolysis time (30, 40 and 80 minutes). The as-extracted CNC were used as nanofillers for the production of polyvinyl alcohol (PVA)-based nanocomposite films with improved thermal and tensile properties, as well as optical transparency. It is shown that the addition of 8 wt % CNC into the PVA matrix increased the Young's modulus by 215 %, the tensile strength by 150 %, and the toughness by 45 %. Additionally, the nanocomposite films maintained the same transparency level of the neat PVA film (transmittance of ∼90% in the visible region), suggesting that the CNC were dispersed at the nanoscale.

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Section: Tem Observations Of Cncmentioning

confidence: 62%

“…More recently, CNC were successfully extracted from marine biomass such as posidonia oceanica ball and leaves [11,12] and Gelidium elegans [10]. Marine biomass, especially algae derivatives, contains low amounts of natural physicochemical barriers, making the cellulose accessible without a severe chemical treatment.…”

Section: Introductionmentioning

confidence: 99%

Reuse of red algae waste for the production of cellulose nanocrystals and its application in polymer nanocomposites

Achaby

Kassab

Aboulkas

et al. 2018

International Journal of Biological Macromolecules

187

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“…The leaves consist primarily of polysaccharides (roughly 60%, two thirds of which corresponds to holocellulose), and the remaining material is largely composed of various phenolic constituents, more specifically lignin, tannin and free and ester-bound phenolic acids (Zapata and McMillan 1979;Agostini et al 1998;Arnold and Targett 2002;Torbatinejad et al 2007). Reported lignin contents of P. oceanica leaves and agaepropili are in the range of 25-30% of their dry weight (Ncibi et al 2009;Khiari et al 2010;Bettaieb et al 2015). However, this is operationally defined Klason lignin (acid-insoluble residues), only a small portion of which corresponds to "true" polyphenolic lignin (Klap et al 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Tannins stored in tannin cells 1 It is worth mentioning here that this P. oceanica beach material causes annoying flies, odours and beach size reduction in touristic areas along the Mediterranean coast, and associated expenditure on removal (Khiari et al 2010;Simeone and De Falco 2012;Plis et al 2014). On the other hand, it is a potential feedstock for biofuel, animal fodder, cellulose and activated charcoal (Torbatinejad et al 2007;Ncibi et al 2009;Coletti et al 2013;Bettaieb et al 2015), even though the ecological consequences of such usages have not been assessed. Knowledge on the molecular composition of Posidonia raw materials is obviously valuable to these potential future applications.…”

Section: Introductionmentioning

confidence: 99%

Molecular composition of plant parts and sediment organic matter in a Mediterranean seagrass (Posidonia oceanica) mat

et al. 2016

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Molecular composition of plant parts and sediment organic matter in a Mediterranean seagrass (Posidonia oceanica) mat.Aquatic Botany http://dx.doi.org/10. 1016/j.aquabot.2016.05.009 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Graphical abstract Highlights-Analytical pyrolysis applied to Posidonia seagrass organs and marine mat deposit -Posidonia phenolic composition dominated by p-hydroxybenzoic acids -Peat-like mat deposits composed predominantly of root, rhizome and sheath materials -We suggest a link between Posidonia chemistry and C accumulation in mats AbstractPosidonia oceanica forms extensive peat-like deposits (mats) in Mediterranean coastal waters, which have a potential as carbon sinks and archives of environmental change.Nonetheless, the organic chemistry of both P. oceanica plant materials, as well as the environmental and diagenetic effects on the composition of its detritus, is poorly understood.We analyzed plant organs of P. oceanica and the coarse organic matter from a mat core spanning 750 yrs using pyrolysis techniques (PY-GC-MS and THM-GC-MS) to improve our understanding of their molecular properties and their preservation upon mat development. It

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“…In general, the most exploited precursors for the preparation of CFs are pitch and synthetic polymers, but their application is limited due to energy and resource concerns [4][5][6]. Cellulose can be easily obtained from natural sources [7] and is a precursor to carbon fiber. Additionally, cellulose does not suffer from the energy and resource concerns associated with pitch and synthetic polymers [3].…”

Section: Introductionmentioning

confidence: 99%

Cellulose-based carbon fibers prepared using electron-beam stabilization

Kim¹,

Park²,

Lee

2016

Carbon letters

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Cellulose fibers were stabilized by treatment with an electron-beam (E-beam). The properties of the stabilized fibers were analyzed by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and thermogravimetric analysis. The E-beam-stabilized cellulose fibers were carbonized in N 2 gas at 800°C for 1 h, and their carbonization yields were measured. The structure of the cellulose fibers was determined to have changed to hemicellulose and cross-linked cellulose as a result of the E-beam stabilization. The hemicellulose decreased the initial decomposition temperature, and the cross-linked bonds increased the carbonization yield of the cellulose fibers. Increasing the absorbed E-beam dose to 1500 kGy increased the carbonization yield of the cellulose-based carbon fiber by 27.5% upon exposure compared to untreated cellulose fibers.

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Preparation and characterization of new cellulose nanocrystals from marine biomass Posidonia oceanica

Cited by 112 publications

References 58 publications

Reuse of red algae waste for the production of cellulose nanocrystals and its application in polymer nanocomposites

Reuse of red algae waste for the production of cellulose nanocrystals and its application in polymer nanocomposites

Molecular composition of plant parts and sediment organic matter in a Mediterranean seagrass (Posidonia oceanica) mat

Cellulose-based carbon fibers prepared using electron-beam stabilization

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