Critical concentration in binary mixtures of limited miscibility

Rzoska, Sylwester J.; Kalabiński, Jakub; Drozd-Rzoska, Aleksandra

doi:10.1016/j.fluid.2021.112979

Cited by 6 publications

(4 citation statements)

References 33 publications

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“…Experimentally, such behavior was validated in ref. [28], for nitrobenzene-decane mixture with the upper critical consolute temperature (UCT). Figure 8 shows its occurrence for the LCT mixture of limited miscibility.…”

Section: Resultsmentioning

confidence: 99%

“…This report focuses on the binary mixtures characterized via the critical concentration. Notwithstanding results of this report can be re-calculated using mole fractions, molar concentration, weight (mass) fraction, or even density [28].…”

Section: Resultsmentioning

confidence: 99%

“…Results presented in this report were obtained using the innovative automatized visual method, described in detail in ref. [28] and tested there for the UCP type mixture of limited miscibility. The set-up is composed of a large volume, thermostated and transparent vessel (V = 20 L), linked to a large volume (V = 25 L) thermostat with external circulation, Julabo apparatus enables the high-precision temperature control.…”

Section: Introductionmentioning

confidence: 99%

“…This phenomenon is discussed in ref. [28]. Components for the preparation of tested mixtures were purchased in Fluka, with the highest available purity level and used without further purification.…”

Section: Introductionmentioning

confidence: 99%

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New insight into 3-picoline—deuterium oxide (D2O) mixtures of limited miscibility with the lower critical consolute temperature

2022

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Coexistence curves in mixtures of limited miscibility with the lower critical consolute temperature (LCT), of 3-picoline with deuterium oxide (D2O), and D2O/H2O have been determined. They were tested with respect to the order parameter, the diameter of the binodal, and coordinates of the critical consolute point (critical temperature $${T}_{\mathrm{C}}$$ T C and critical concentration $${\phi }_{\mathrm{C}}$$ ϕ C ). Studies were carried out using the innovative method based on the analysis of relative volumes occupied by coexisting phases, yielding high-resolution data. The clear violation of the Cailletet-Mathew law of rectilinear diameter for the LCT mixtures of limited miscibility is evidenced. For the order parameter, the new distortion-sensitive analysis method yielded the evidence for the model-value of the order parameter critical exponent $$\beta =0.326\pm 0.003$$ β = 0.326 ± 0.003 , up to ca. 1 K from $${T}_{\mathrm{C}}$$ T C . Finally, the simple & easy method for determining the critical concentration by testing relative volumes of coexisting phases (or alternatively fractional meniscus heights, h) is presented. The significance of the invariant value $${h}_{\mathrm{C}}=h\left({T}_{\mathrm{C}},{\phi }_{\mathrm{C}}\right)=1/2$$ h C = h T C , ϕ C = 1 / 2 is highlighted. The appearance of the milky & bluish critical opalescence is also shown. Graphical abstract

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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