Influence of water on cellulose-EMIMAc solution properties: a viscometric study

Le, Kim Anh; Sescousse, Romain; Budtova, Tatiana

doi:10.1007/s10570-011-9610-3

Cited by 62 publications

(49 citation statements)

References 41 publications

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“…The high concentration also led to a critical shear rate of non-Newtonian flow transition, which are shifted to lower shear rates with increasing concentration. This is quite similar to reports for many solutions of neutral polymers (Graessley 1974;Kulicke and Kniewske 1984) and for many other studies of cellulose in ILs (Sammons et al 2008;Collier et al 2009;Gericke et al 2009;Le et al 2012).…”

Section: Viscosity Of Cellulose/tbaa/dmso Solutionssupporting

confidence: 91%

Effective Preparation of Bamboo Cellulose Fibers in Quaternary Ammonium/DMSO Solvent

Jiang¹,

Miao²,

Yu³

et al. 2016

BioResources

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A novel, efficient, and direct blend of solvents, tetrabutylammonium acetate/dimethyl sulfoxide (TBAA/DMSO), was used for the dissolution and regeneration of bamboo pulp. Regenerated fibers were successfully prepared by a wet spinning process. The bamboo pulp without any pretreatment was readily soluble in the solvent under mild conditions. The dissolution process was observed using a confocal laser scanning microscope (CLSM). Rheological properties of the cellulose solutions at various concentrations were investigated. The regenerated fibers prepared by coagulation in ethanol were characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and an electronic tensile tester. The SEM images showed that the regenerated fibers possessed a smooth surface and circular cross-section, and the XRD and FT-IR results revealed that the fibers exhibited a cellulose II structure. The thermostability and mechanical properties of the fibers was also investigated. Keywords INTRODUCTIONRenewable resources are of importance in our modern society because of their positive effects on agriculture, the environment, and the economy. Because of the limited existing quantities of fossil supplies and the recent environmental conservation regulations, biopolymers being used as renewable materials are gaining considerable importance. Cellulose, the most abundant renewable polymer available, is produced by nature at an annual rate of 10 11 to 10 12 tons (Hae-ri et al. 2014). It is a homopolysaccharide that is formed from linearly connecting D-glucose units condensed through the β(1−4) glycosidic bonds (Nishiyama et al. 2002;Van de Vyver et al. 2011). This natural polymer has a 2-fold screw axis along the chain direction. The degree of polymerization (DP) of the macromolecule can vary from 100 to 20,000 depending on the sources (Zhang et al. 2006). Lignocellulose, which refers to the chemical composition of plant-based material, occupies an important position as a raw material for papermaking, viscose fibers, bio-ethanol, etc.Among natural plants, bamboo is rapidly grown, an early harvested vegetable, and has a high adaptability, unlike trees that suffer insect infestation. Bamboo is a renewable natural bioresource that is abundant in many parts of the world. After being grown for three years, bamboo can be felled every year within several decades to 100 years (He et al. 2007). It has several advantages, including small environmental load, rapid growth, renewability, relatively high strength, and good flexibility (Liu et al. 2010). Bamboo is considered an important biopolymer with useful applications in various fields, including textiles (Teli and (Liu et al. 2004), using a viscose process. However, the conventional viscose process causes serious environmental problems that restrict the further development of regenerated bamboo fibers. Because of the high pollution and low efficiency of the traditional processes, it is imperative to explo...

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Section: Viscosity Of Cellulose/tbaa/dmso Solutionssupporting

confidence: 91%

Effective Preparation of Bamboo Cellulose Fibers in Quaternary Ammonium/DMSO Solvent

Jiang¹,

Miao²,

Yu³

et al. 2016

BioResources

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“…alcohols, are present as impurities, competing with cellulose for hydrogen bonding with the acetate ion. This is indeed observed experimentally; the presence of water decreases cellulose solubility in IL solvents (Olsson et al 2014;Le et al 2012). A necessary feature of the solvent for the hydrogen bonding mechanism thus appears to be the frustration in the solvent that contains a strong hydrogen bond acceptor, the acetate ion, but no donor.…”

Section: Discussionmentioning

confidence: 59%

On the dissolution of cellulose in tetrabutylammonium acetate/dimethyl sulfoxide: a frustrated solvent

Idström¹,

Gentile

Gubitosi

et al. 2017

Cellulose

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We have found that the dissolution of cellulose in the binary mixed solvent tetrabutylammonium acetate/dimethyl sulfoxide follows a previously overlooked near-stoichiometric relationship such that one dissolved acetate ion is able to dissolve an amount of cellulose corresponding to about one glucose residue. The structure and dynamics of the resulting cellulose solutions were investigated using small-angle X-ray scattering (SAXS) and nuclear magnetic resonance techniques as well as molecular dynamics simulation. This yielded a detailed picture of the dissolution mechanism in which acetate ions form hydrogen bonds to cellulose and causes a diffuse solvation sheath of bulky tetrabutylammonium counterions to form. In turn, this leads to a steric repulsion that helps to keep the cellulose chains apart. Structural similarities to previously investigated cellulose solutions in aqueous tetrabutylammonium hydroxide were revealed by SAXS measurement. To what extent this corresponds to similarities in dissolution mechanism is discussed.

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“…DMSO [52], 1,3-dimethyl-2-imidazolidinone [32], or small amounts of water [53,54] were reported to reduce the viscosity of the spinning dope. However, the change in the viscoelastic properties and, consequently, the effect on spinnability has not been discussed.…”

Section: Rheology Of Cellulose-il Solutionsmentioning

confidence: 99%

Ionic Liquids for the Production of Man-Made Cellulosic Fibers: Opportunities and Challenges

Hummel

Michud

Tanttu

et al. 2015

Advances in Polymer Science

132

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The constant worldwide increase in consumption of goods will also affect the textile market. The demand for cellulosic textile fibers is predicted to increase at such a rate that by 2030 there will be a considerable shortage, estimated at~15 million tons annually. Currently, man-made cellulosic fibers are produced commercially via the viscose and Lyocell™ processes. Ionic liquids (ILs) have been proposed as alternative solvents to circumvent certain problems associated with these existing processes. We first provide a comprehensive review of the progress in fiber spinning based on ILs over the last decade. A summary of the reports on the preparation of pure cellulosic and composite fibers is complemented by an overview of the rheological characteristics and thermal degradation of cellulose-IL solutions. In the second part, we present a non-imidazolium-based ionic liquid, 1,5-diazabicyclo[4.3.0]non-5-enium acetate, as an excellent solvent for cellulose fiber spinning. The use of moderate process temperatures in this process avoids the otherwise extensive cellulose degradation. The structural and morphological properties of the spun fibers are described, as determined by WAXS, birefringence, and SEM measurements. Mechanical properties are also reported. Further, the suitability of the spun fibers to produce yarns for various textile applications is discussed.

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Influence of water on cellulose-EMIMAc solution properties: a viscometric study

Cited by 62 publications

References 41 publications

Effective Preparation of Bamboo Cellulose Fibers in Quaternary Ammonium/DMSO Solvent

Effective Preparation of Bamboo Cellulose Fibers in Quaternary Ammonium/DMSO Solvent

On the dissolution of cellulose in tetrabutylammonium acetate/dimethyl sulfoxide: a frustrated solvent

Ionic Liquids for the Production of Man-Made Cellulosic Fibers: Opportunities and Challenges

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