Rheology of 1‐butyl‐3‐methylimidazolium chloride cellulose solutions. I. Shear rheology

Sammons, Rhea J.; Collier, J. R.; Rials, Timothy G.; Petrovan, S.

doi:10.1002/app.28733

Cited by 95 publications

(122 citation statements)

References 18 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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show abstract

“…[21,29,36,37] and has also been predicted by Molecular Dynamics simulations [38]. After this value is reached, at medium and high velocity rates, a Newtonian behavior is found and the viscosity is constant with a value 10 times lower than the one found at low shear rate.…”

Section: Resultsmentioning

confidence: 53%

Rheological behavior of multiwalled carbon nanotube-imidazolium tosylate ionic liquid dispersions

et al. 2017

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The rheological behavior of 1-ethyl-3-methylimidazolium tosylate (EMIMTsO) and its dispersions with aligned and non-aligned multi-walled carbon nanotubes (MWCNTs) has been studied. Raman spectroscopy analysis has been carried out to characterize the samples. The effects of concentration, type of CNTs and temperature on the viscolelastic behavior of EMIMTsO have been evaluated. Regardless the concentration and type of added CNTs, a non-Newtonian behavior of the fluids has been found under shear stress.The ionic liquid and the EMIMTsO-MWCNTs 1 wt% dispersion showed a temperatureinduced gelation. However, the addition of small concentrations of MWCNTs prevents from the formation of gels.

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“…A time experiment at constant frequency showed no significant water uptake from the laboratory atmosphere at the plate edges within the required testing time. Thus, it was not necessary to seal the edges with paraffin oil as previously suggested [40,43]. Each sample was subjected to a dynamic frequency sweep at 70, 75, 80, and 85 C over an angular velocity range of 0.1-100 s…”

Section: Rheological Measurementsmentioning

confidence: 99%

“…The elastic and viscous proportions of cellulose-IL solutions can be assessed via oscillatory rheology measurements [43,44]. A frequency sweep in the linear viscoelastic range of the solutions provides the complex viscosity |η*| and storage (G 0 ) and loss (G 00 ) moduli.…”

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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Rheology of 1‐butyl‐3‐methylimidazolium chloride cellulose solutions. I. Shear rheology

Cited by 95 publications

References 18 publications

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

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

Rheological behavior of multiwalled carbon nanotube-imidazolium tosylate ionic liquid dispersions

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

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