Cellulose oligomers production and separation for the synthesis of new fully bio-based amphiphilic compounds

Billès, Elise; Onwukamike, Kelechukwu N.; Coma, Véronique; Grelier, Stéphane; Peruch, Frédéric

doi:10.1016/j.carbpol.2016.07.107

Cited by 24 publications

(11 citation statements)

References 39 publications

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“…Both the deacetylation of cellulose triacetate and the hydrolysis in H3PO4 involve the formation of LMWC in a dissolved state, and subsequent precipitation using an antisolvent 84,85 . Upon precipitation, the chains were shown to crystallize into single cellulose nanocrystals that have a different structure to the initial cellulose.…”

Section: Structurementioning

confidence: 99%

The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer

Buffière

Balogh-Michels

Borrega

et al. 2017

Carbohydrate Polymers

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This paper takes a comparative approach in characterizing two types of nano-scale cellulosic particles obtained using chemical-free pathways, either by nearcritical water treatment or by high-shear homogenization from the same microcrystalline cellulose (MCC). The nearcritical water treatment efficiently depolymerized cellulose, producing a solid precipitated fraction of low-molecular-weight material containing cellulose II, while homogenization mechanically deconstructed MCC without altering its molecular structure. Both pathways yielded nanocellulose-like materials yet with different morphologies. The mechanically produced, rod-like particles were obtained with high yield. In contrast, the hydrothermal precipitate exhibited more hydrophobic ribbon-like particles that provided a greater level of particle-particle interaction. Both materials successfully acted as stabilizers for oil-in-water Pickering emulsions; however, the hydrothermally-produced material exhibited superior performance, with stable emulsions obtained upon addition of as low as 1.0wt.% cellulose. These two pathways are highly relevant for altering the structure and properties of MCC and for formulating new, sustainably produced nanocellulose-based materials.

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Section: Structurementioning

confidence: 99%

The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer

Buffière

Balogh-Michels

Borrega

et al. 2017

Carbohydrate Polymers

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“…This method is also represented in Table (entries 1a–1d) as the precipitation solvent influences the range of cellulose DP . In another study, several successive solubilizations were applied to separate cellulose oligomers according to their size (Scheme ).…”

Section: Cellulose Oligomer Separation At Preparative Scalementioning

confidence: 99%

Water-soluble cellulose oligomer production by chemical and enzymatic synthesis: a mini-review

et al. 2017

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This mini‐review focuses on the production of water‐soluble cellulose oligomers. They are easier to handle than cellulose while still having some very interesting cellulose features. Their production is not trivial and they are thus seldom commercially available or are available at high prices and only in small quantities (100 mg or less). The goal of this mini‐review is to describe various routes to obtain these cellulose oligomers. Several examples of chemical or enzymatic synthesis and enzymatic or acidic depolymerization are presented. All the pathways considered are then compared according to several criteria: polymerization degree, yield, availability and cost of reagents, reaction time, etc. As most of the pathways produce a mixture of cellulose oligomers, techniques to separate them according to their length are also discussed. © 2017 Society of Chemical Industry

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“…The molecular weight (M w ) distribution of the lignin was evaluated by GPC using the acetylation of materials. 18,19 Samples (0.3 g) were dissolved in 8 mL of pyridine-acetic anhydride (1 : 1, v/v), and the mixture was stirred in dark at room temperature for 72 h. Ethanol (1 mL) was then added to the mixture, and most of the pyridine-acetic anhydride was removed by a rotary evaporator. The dried samples were washed with water and collected on a 10 mm Nylon membrane lter.…”

Section: Characterization Of Al and Deslmentioning

confidence: 99%

Possible dissolution mechanism of alkali lignin in lactic acid-choline chloride under mild conditions

Liu

Hou

et al. 2020

RSC Adv.

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Cellulose oligomers production and separation for the synthesis of new fully bio-based amphiphilic compounds

Cited by 24 publications

References 39 publications

The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer

The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer

Water-soluble cellulose oligomer production by chemical and enzymatic synthesis: a mini-review

Possible dissolution mechanism of alkali lignin in lactic acid-choline chloride under mild conditions

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