Erratum to “Phase equilibrium in aqueous two-phase systems containing ethylene oxide–propylene oxide block copolymers and dextran” [Fluid Phase Equilibr. 218 (2004) 221–228]

Tada, Eduardo dos Santos; Loh, Watson; Pessôa-Filho, Pedro de Alcântara

doi:10.1016/j.fluid.2004.10.030

Cited by 6 publications

(1 citation statement)

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“…However, this approach does not shed light on polydispersity nor does it give an insight into the demixing in the metastable region, where a system de-mixes into multiple phases, but that is outside of the unstable (spinodal) region. It is also difficult to quantify the impact of polydispersity and its corresponding distribution on phase behavior (Dos Santos et al, 2004). In order to get more insights into the transition between one and two phases, Larsson and Mattiasson (1988) determined the experimental phase boundary for polydisperse PEO and dextran.…”

Section: Introductionmentioning

confidence: 99%

Phase behavior in multicomponent mixtures

Sturtewagen,

Dewi,

Bot

et al. 2024

Front. Soft Matter

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In this article, we study the phase behavior of two polydisperse hydrocolloids: dextran and polyethylene oxide. We combine the data on the experimental osmometric virial coefficients of the pure components with the experimental critical point of their aqueous mixture and the size distribution of each component from a previously published study in order to predict the phase boundary, spinodal, and fractionation upon demixing of the polydisperse mixture. We compare the results of our calculation to the experimental phase diagram. Our method reveals a better correspondence with the experimental binary phase behavior than modeling each component as monodisperse. The polydispersity of the hydrocolloids causes the phase separation boundary to shift to lower concentrations and the miscibility region to decrease and change its shape from a rotated U-shape to a W-shape.

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Section: Introductionmentioning

confidence: 99%

Phase behavior in multicomponent mixtures

Sturtewagen,

Dewi,

Bot

et al. 2024

Front. Soft Matter

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Liquid–liquid extraction of metal ions without use of organic solvent

Rodrigues

Silva

et al. 2008

Separation and Purification Technology

116

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Nitroprusside−PEO Enthalpic Interaction as a Driving Force for Partitioning of the [Fe(CN)₅NO]^2- Anion in Aqueous Two-Phase Systems Formed by Poly(ethylene oxide) and Sulfate Salts

Silva

Aquino

et al. 2006

J. Phys. Chem. B

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Ions are known to concentrate in the salt-enriched phase of aqueous two-phase systems, with the only known exception being the pertechnetate anion, TcO(4)(-). We have discovered a second ion, nitroprusside anion (NP), which is markedly transferred from the salt phase to the polymer phase. The partitioning behavior of [Fe(CN)(5)NO](2-) anion was investigated in ATPS formed by poly(ethylene oxide) of molar mass 3350 and 35000 g mol(-1), and different sulfate salts (Na(2)SO(4), Li(2)SO(4), and MgSO(4)). On the basis of a model, the nitroprusside high affinity for the macromolecular phase was attributed to an enthalpic specific interaction between the anion and ethylene oxide unit. Partition coefficients increased exponentially with tie-line length increase, reaching values as high as 1000 and showing a relationship very dependent on the salt nature, but independent of the polymer molar mass.

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Erratum to “Phase equilibrium in aqueous two-phase systems containing ethylene oxide–propylene oxide block copolymers and dextran” [Fluid Phase Equilibr. 218 (2004) 221–228]

Cited by 6 publications

References 0 publications

Phase behavior in multicomponent mixtures

Phase behavior in multicomponent mixtures

Liquid–liquid extraction of metal ions without use of organic solvent

Nitroprusside−PEO Enthalpic Interaction as a Driving Force for Partitioning of the [Fe(CN)₅NO]^2- Anion in Aqueous Two-Phase Systems Formed by Poly(ethylene oxide) and Sulfate Salts

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Erratum to “Phase equilibrium in aqueous two-phase systems containing ethylene oxide–propylene oxide block copolymers and dextran” [Fluid Phase Equilibr. 218 (2004) 221–228]

Cited by 6 publications

References 0 publications

Phase behavior in multicomponent mixtures

Phase behavior in multicomponent mixtures

Liquid–liquid extraction of metal ions without use of organic solvent

Nitroprusside−PEO Enthalpic Interaction as a Driving Force for Partitioning of the [Fe(CN)5NO]2- Anion in Aqueous Two-Phase Systems Formed by Poly(ethylene oxide) and Sulfate Salts

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Nitroprusside−PEO Enthalpic Interaction as a Driving Force for Partitioning of the [Fe(CN)₅NO]^2- Anion in Aqueous Two-Phase Systems Formed by Poly(ethylene oxide) and Sulfate Salts