Ionic liquids as solvents for biopolymers: Acylation of starch and zein protein

Biswas, Atanu; Shogren, Randal L.; Stevenson, David G.; Willett, J. L.; Bhowmik, Pradip K.

doi:10.1016/j.carbpol.2006.04.005

Cited by 276 publications

(208 citation statements)

References 12 publications

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“…The [Ch]Cl:urea mixture (1:2 mol), for example, was used in the Perkin condensation of cinnamic acid [9], reduction of epoxides [10] or in an electrophilic substitution of quinone derivatives [11]. Other applications are the incorporation of metal ions in solution for metal deposition and electro polishing [3], metal extraction [12], conversion of lignocellulosic biomass [13], gas separations [14], extraction of glycerol from biodiesel [15], extraction media for azeotropic mixtures [16], fuel purification [17], potential drug vehicles [18], or in the preparation of nanomaterials [19].…”

Section: Introductionmentioning

confidence: 99%

Measurement and PC-SAFT modeling of solid-liquid equilibrium of deep eutectic solvents of quaternary ammonium chlorides and carboxylic acids

Pontes

Crespo

Martins

et al. 2017

Fluid Phase Equilibria

110

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a b s t r a c tIn this study the solid-liquid equilibria (SLE) of 15 binary mixtures composed of one of three different symmetrical quaternary ammonium chlorides and one of five different fatty acids were measured. The experimental data obtained showed extreme negative deviations to ideality causing large meltingtemperature depressions (up to 300 K) that are characteristic for deep eutectic systems. The experimental data revealed that cross-interactions between quaternary ammonium salt and fatty acid increase with increasing alkyl chain length of the quaternary ammonium chloride and with increasing chain length of the carboxylic acid. The pronounced decrease of melting temperatures in these deep eutectic systems is mainly caused by strong hydrogen-bonding interactions, and thermodynamic modeling required an approach that takes hydrogen bonding into account. Thus, the measured phase diagrams were modeled with perturbed-chain statistical associating fluid theory based on the classical molecular homonuclear approach. The model showed very good agreement with the experimental data using a semi-predictive modeling approach, in which binary interaction parameters between quaternary ammonium chloride and carboxylic acid correlated with chain length of the components. This supports the experimental findings on the phase behavior and interactions present in these systems and it allows estimating eutectic points of such highly non-ideal mixtures.

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Section: Introductionmentioning

confidence: 99%

Measurement and PC-SAFT modeling of solid-liquid equilibrium of deep eutectic solvents of quaternary ammonium chlorides and carboxylic acids

Pontes

Crespo

Martins

et al. 2017

Fluid Phase Equilibria

110

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“…In the past few years, ILs have also been employed as solvents for various types of polymerization [21][22][23], to dissolve polymers (cellulose [24], silk fibroin [25], starch [26]) or as plasticizers for different polymers [27,28].…”

Section: Introductionmentioning

confidence: 99%

Ionic liquids as coagents for sulfur vulcanization of butadiene–styrene elastomer filled with carbon black

Maciejewska

Zaborski

2018

Polym. Bull.

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The aim of this work was to study the activity of several alkylimidazolium salts of bis(trifluoromethylsulfonyl)imides to obtain a very fast vulcanization of the butadiene-styrene (SBR) elastomer. Ionic liquids (ILs) such as alkylimidazolium salts with ethyl-, propyl-, butyl-, hexyl-, decyl-, dodecyl-, and hexadecyl chains in the cation together with nanosized zinc oxide are used to develop elastomer composites with very short vulcanization time and a reduced amount of vulcanization activator. In this article, we discuss the effect of the ILs with respect to the length of alkyl chain in their cation on the vulcanization kinetics of rubber compounds. The influence of ILs on the crosslink density as well as the mechanical properties of the vulcanizates and their resistance to thermo-oxidative and UV aging were also studied. ILs resulted in a shortened optimal vulcanization time and reduced the onset vulcanization temperature compared to zinc oxide containing rubber compound. This is very important from a technological point of view. A considerable increase in the crosslink density of vulcanizates was also observed.

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“…Due to these unique properties, ILs have been widely synthesized and investigated as media for electrodeposition of metals [6][7][8], as a tool for lignocellulosic biomass fractionation [9], catalysis and biocatalysis [10][11][12][13][14][15][16], corrosion inhibition [17][18][19][20], food chemical science [21], and the nuclear industry [22].…”

Section: Introductionmentioning

confidence: 99%

New Eco-Friendly 1-Alkyl-3-(4-phenoxybutyl) Imidazolium-Based Ionic Liquids Derivatives: A Green Ultrasound-Assisted Synthesis, Characterization, Antibacterial Activity and POM Analyses

et al. 2014

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Ionic liquids as solvents for biopolymers: Acylation of starch and zein protein

Cited by 276 publications

References 12 publications

Measurement and PC-SAFT modeling of solid-liquid equilibrium of deep eutectic solvents of quaternary ammonium chlorides and carboxylic acids

Measurement and PC-SAFT modeling of solid-liquid equilibrium of deep eutectic solvents of quaternary ammonium chlorides and carboxylic acids

Ionic liquids as coagents for sulfur vulcanization of butadiene–styrene elastomer filled with carbon black

New Eco-Friendly 1-Alkyl-3-(4-phenoxybutyl) Imidazolium-Based Ionic Liquids Derivatives: A Green Ultrasound-Assisted Synthesis, Characterization, Antibacterial Activity and POM Analyses

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