Correlation of Viscosity Parameters and Enthalpy of Solutions of Electrolytes in Water-Organic Solvents

Taniewska-Osińska, Stefania; Nowicka, Bożenna; Kacperska, Anna; Bald, Adam

doi:10.1080/00319109308030352

Cited by 10 publications

(4 citation statements)

References 26 publications

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“…In Fig. 11 the excess volumes of Kiyohara et al [16], Signer et al [17], Taniewska-Osinka et al [18], Aminabhavi and Gopalakrishna [19], Back and Woolf [20] and Matous et al [21] at 298.15 K are compared with the correlation results. From the figure it can be seen that the literature data are well reproduced by the correlation.…”

Section: Resultsmentioning

confidence: 96%

“…Usually, setups with 11. Comparison of correlated and literature data at 1 atm for the system THF + water at 298 K: ( ) [16], ( ) [17], (᭹) [18], ( ) [19], ( ) [20], (+) [21], line corresponds to the correlated excess volumes at 0.1 MPa. a viewing window are used for the determination of LLE, where the system is mixed with a stirrer and the occurrence of the second phase is detected by the cloud point.…”

Section: Usage Of the Vibrating Tube Densimeter For The Measurements mentioning

confidence: 99%

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Liquid densities of THF and excess volumes for the mixture with water in a wide temperature and pressure range

Schedemann¹,

Ihmels²,

Gmehling³

2010

Fluid Phase Equilibria

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Section: Resultsmentioning

confidence: 96%

Section: Usage Of the Vibrating Tube Densimeter For The Measurements mentioning

confidence: 99%

Liquid densities of THF and excess volumes for the mixture with water in a wide temperature and pressure range

Schedemann¹,

Ihmels²,

Gmehling³

2010

Fluid Phase Equilibria

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“…The viscosities of water/THF mixtures at 25 °C were obtained from ref. 36 and are summarized in Table 2. The correlation functions of all samples are included in Figures S1–S3 in the Electronic Supplementary Information.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…36 , R h and D are the hydrodynamic radius and diffusion coefficient of the micelles, respectively, and σ D is the standard deviation in the diffusion coefficient. Measurements were obtained on two samples for every solvent composition; all measurements are reported here and raw data is provided in Figures S1–S3.…”

Section: Figurementioning

confidence: 99%

Fluorophore exchange kinetics in block copolymer micelles with varying solvent–fluorophore and solvent–polymer interactions

et al. 2016

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Fluorescence spectroscopy was employed to characterize the kinetics of guest exchange in diblock copolymer micelles composed of poly(ethylene oxide-b-ε-caprolactone) (PEO-PCL) diblock copolymers in water/tetrahydrofuran (THF) mixtures which encapsulated fluorophores. The solvent composition (THF content) of the micelle solution was varied as a means of modulating the strength of interactions between the fluorophore and solvent as well as between the micelle core and solvent. A donor-acceptor fluorophore pair was employed consisting of 3,3′-dioctadecyloxacarbocyanine perchlorate (DiO, the donor) and 1,1′-dioctadecyl-3,3,3′,3′-tetramethylindocarbocyanine perchlorate (DiI, the acceptor). Through the process of Förster resonance energy transfer (FRET), energy was transferred from the donor to acceptor when the fluorophores were in close proximity. A micelle solution containing DiO was mixed with a micelle solution containing DiI at t=0, and the emission spectra of the mixed solution were monitored over time (at an excitation wavelength optimized for the donor). In micelle solutions containing 5 and 10 vol% THF in the bulk solvent, an increase in the acceptor peak intensity maximum occurred over time in the post-mixed solution, accompanied by a decrease in the donor peak intensity maximum, indicating the presence of energy transfer from the donor to the acceptor. At long times, the FRET ratios (acceptor peak intensity divided by the sum of the acceptor and donor peak intensities) were indistinguishable from that determined from pre-mixed micelle solutions of the same THF content (in pre-mixed solutions, DiO and DiI were encapsulated within the same micelle cores). In the micelle solution containing 20 vol% THF, the fluorophore exchange process occurred too quickly to be observed (the FRET ratios measured from the solutions mixed at t=0 were commensurate to that measured from the pre-mixed solution). A time constant describing the guest exchange process was extracted from the time-dependence of the FRET ratio through fit of an exponential decay. An increase in the THF content in the micelle solution resulted in a decrease in the time constant, and the time constant varied over five orders of magnitude as the THF content was varied from 5–20 vol%.

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Conductivity studies on some alkali metal iodides in aqueous N,N-dimethylformamide solutions at 298.15K

1997

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Correlation of Viscosity Parameters and Enthalpy of Solutions of Electrolytes in Water-Organic Solvents

Cited by 10 publications

References 26 publications

Liquid densities of THF and excess volumes for the mixture with water in a wide temperature and pressure range

Liquid densities of THF and excess volumes for the mixture with water in a wide temperature and pressure range

Fluorophore exchange kinetics in block copolymer micelles with varying solvent–fluorophore and solvent–polymer interactions

Conductivity studies on some alkali metal iodides in aqueous N,N-dimethylformamide solutions at 298.15K

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