Thermodynamic studies of the ionic liquid 1-hexyl-3-methylimidazolium chloride [C6mim][Cl] in polyethylene glycol aqueous solutions

Sadeghi, Rahmat; Ebrahimi, Nosaibah; Mahdavi, Adibeh

doi:10.1016/j.jct.2011.09.015

Cited by 21 publications

(14 citation statements)

References 46 publications

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“…Therefore, the molecule of surfactant would prefer to interact with the same surfactant rather than interact with the water molecules, resulting in less amount of water detectable in the surfactant-rich phase. This phenomenon is also described by Sadeghi et al [ 37 ]. They study the interaction between polymer surfactant polyethylene glycol with the salt or water.…”

Section: Resultssupporting

confidence: 80%

Cloud Point Extraction of Parabens Using Non-Ionic Surfactant with Cylodextrin Functionalized Ionic Liquid as a Modifier

Noorashikin

Raoov

Mohamad

et al. 2013

IJMS

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A cloud point extraction (CPE) process using non-ionic surfactant (DC193C) to extract selected paraben compounds from water samples was investigated using reversed phase high performance liquid chromatography (RP-HPLC). The CPE process with the presence of β-cyclodextrin (βCD) functionalized ionic liquid as a modifier (CPE-DC193C-βCD-IL) is a new extraction technique that has been applied on the optimization of parameters, i.e., pH, βCD-IL concentration and phase volume ratio. This CPE-DC193C-βCD-IL method is facilitated at 30 °C, showing great losses of water content in the surfactant-rich phase, resulting in a high pre-concentration factor and high distribution coefficient. The developed method CPE-DC193C-βCD-IL did show enhanced properties compared to the CPE method without the modifier (CPE-DC193C). The developed method of CPE-DC193C-βCD-IL gives an excellent performance on the detection of parabens from water samples with the limit of detection falling in the range of 0.013–0.038 μg mL−1. Finally, the inclusion complex formation, hydrogen bonding, and π–π interaction between the βCD-IL, benzyl paraben (ArP), and DC 193C were proven using 1H NMR and 2D NOESY spectroscopy.

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Section: Resultssupporting

confidence: 80%

Cloud Point Extraction of Parabens Using Non-Ionic Surfactant with Cylodextrin Functionalized Ionic Liquid as a Modifier

Noorashikin

Raoov

Mohamad

et al. 2013

IJMS

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“…The positive and small negative (∂ϕ E 0 /∂T) p values are observed for solutes having structure making capacity, whereas negative (∂ϕ E 0 /∂T) p values for structure breaking solutes. The small negative values of (∂ϕ E 0 /∂T) p as reported in Table 5 shows the structure making ability of phosphate salts in aqueous [C 6 …”

Section: Journal Of Chemical and Engineering Datamentioning

confidence: 99%

“…As per our knowledge no studies on densities, speeds of sound of phosphate salts with 1-hexyl-3-methylimidazolium chloride have been reported so far. The effect of temperature and concentration on the properties of phosphate salts in aqueous [C 6 mim] [Cl] has been studied.…”

Section: Introductionmentioning

confidence: 99%

Interionic Interactions of Aqueous Mixtures of Ionic Liquid 1-Hexyl-3-methylimidazolium Chloride with Phosphate Salts at T = (288.15 to 308.15) K: Volumetric, Acoustic and UV Absorption Studies

Kumar

Chadha

2015

J. Chem. Eng. Data

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The interactions of phosphate salts like disodium hydrogen phosphate (Na 2 HPO 4 ) and dipotassium hydrogen phosphate (K 2 HPO 4 ) with 1-hexyl-3-methylimidazolium chloride ([C 6 mim][Cl]) as a function of temperature have been investigated by combination of volumetric and acoustic measurements. Densities, ρ, and speeds of sound, u, for phosphate salts in aqueous solutions of 1-hexyl-3-methylimidazolium chloride have been measured at T = (288. 15, 293.15, 298.15, 303.15, 308.15) K and atmospheric pressure. The apparent molar volume, limiting apparent molar volume and standard partial molar volumes of transfer for phosphate salts from water to aqueous 1-hexyl-3-methylimidazolium chloride solutions have been calculated from density data. Apparent molar isentropic compression, limiting apparent molar isentropic compression and standard partial molar isentropic compression of transfer have been calculated from speeds of sound data. The UV absorption studies have also made in this study. The results have been explained in terms of competing patterns of interactions of cosolvent and the solute.

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“…According to Sadeghi et al [23], solute-solute interaction was greater than the interaction between surfactant with salt and water. When there is more hydrophilic surfactant in the solution, the solute-solute interaction will be more favorable and molecule of surfactant will interact with the surfactant than interacting with water molecules.…”

Section: Resultsmentioning

confidence: 99%

An Environmentally Friendly Method for Extraction of Parabens in Various Samples Using Low Viscosity and Low Cloud Point Temperature Surfactant

2018

MJAS

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Cloud point extraction is developed using a low viscosity surfactant (Sylgard 309) coupled with HPLC-UV. It is a simple method for extraction of parabens in various samples. At the optimum conditions, the method developed achieves limit of detection and extraction recoveries in the range of 0.01 ppm -0.02 ppm and 68.5% -119.3%, respectively. Linearity of the calibration curves in the range of 0.2-1.0 mg/L. The correlation coefficient are achieved between 0.9995-0.9999. Each replicated samples are spiked with 1 mg/L of parabens. The results indicate that surfactant Sylgard 309 has a great potential for the extraction of organic pollutant in various samples.Keywords: cloud point extraction, parabens, sylgard 309, simple method for extraction Abstrak Pengekstrakan titik awan dibangunkan menggunakan surfaktan yang mempunyai kelikatan yang rendah (Sylgard 309) digabungkan dengan KCPT-UV. Ini merupakan satu kaedah yang mudah untuk pemisahan paraben dalam pelbagai jenis sampel. Pada keadaan yang optimum, kaedah yang dibangunkan ini boleh mencapai had pengesanan dan perolehan semula pengekstrakan dalam julat 0.01 ppm -0.02 ppm dan 68.5% -119.3%. Pekali korelasi yang dicapai adalah dalam julat 0.9995-0.9999. Larutan piawai yang ditambahkan dalam sampel iaitu 1mg/l paraben dalam setiap sampel replikat. Keputusan kajian menunjukkan bahawa surfaktan Sylgard 309 mempunyai potensi yang besar untuk diterokai bagi pengekstrakan pencemar 365rganic dalam pelbagai sampel.

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Thermodynamic studies of the ionic liquid 1-hexyl-3-methylimidazolium chloride [C6mim][Cl] in polyethylene glycol aqueous solutions

Cited by 21 publications

References 46 publications

Cloud Point Extraction of Parabens Using Non-Ionic Surfactant with Cylodextrin Functionalized Ionic Liquid as a Modifier

Cloud Point Extraction of Parabens Using Non-Ionic Surfactant with Cylodextrin Functionalized Ionic Liquid as a Modifier

Interionic Interactions of Aqueous Mixtures of Ionic Liquid 1-Hexyl-3-methylimidazolium Chloride with Phosphate Salts at T = (288.15 to 308.15) K: Volumetric, Acoustic and UV Absorption Studies

An Environmentally Friendly Method for Extraction of Parabens in Various Samples Using Low Viscosity and Low Cloud Point Temperature Surfactant

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