(Surfactant+polymer) interaction parameter studied by (liquid+liquid) equilibrium data of quaternary aqueous solution containing surfactant, polymer, and salt

Foroutan, Masumeh; Heidari, Nosrat; Mohammadlou, Maryam; Sojahrood, Amin Jafari

doi:10.1016/j.jct.2008.09.015

Cited by 5 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a nonionic surfactant, the solubility of Trition X-100 is lower than the salt solubility and varies with the polymer molecules. 34 There was white and viscous sediment at higher surfactant concentrations in PEG4000-Triton X-100 ATPS. For polymer−surfactant ATPS, the twophase regions and Triton X-100 concentrations in the top phase (PEG enriched) increase with the increase in PEG molar mass.…”

Section: ■ Results and Discussionmentioning

confidence: 96%

“…The polymer–organic salt ATPS also have a wider TLL range due to the higher solubility of sodium citrate (720 g/L, 25 °C). As a nonionic surfactant, the solubility of Trition X-100 is lower than the salt solubility and varies with the polymer molecules . There was white and viscous sediment at higher surfactant concentrations in PEG4000-Triton X-100 ATPS.…”

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Liquid–Liquid Equilibrium of Various Aqueous Two-Phase Systems: Experiment and Correlation

2013

View full text Add to dashboard Cite

Liquid–liquid equilibrium (LLE) data for aqueous two-phase systems (ATPS) were discussed through experiment and correlation at 25 °C, in polymer–organic salt ATPS, alcohol–salt ATPS, and polymer–surfactant ATPS, respectively. Various binodal curves empirical equations combined with simple experiments were applied to determine the LLE data with as wide composition concentrations as possible. The tie-line length (TLL) ranges of the investigated ATPS were also determined experimentally. Both the two-phase regions and the TLL ranges of polymer–organic salt ATPS or alcohol–salt ATPS were generally wider than polymer–surfactant ATPS, which would be caused by the solubility of two compositions in different ATPS. The parameters of tie-line equations including Othmer–Tobias and Bancroft equations were further obtained by LLE data, which can be used to predict the unknown tie-line data. The experimental volume ratios of various tie-lines in ATPS showed good agreement with the predicted data based on the small standard deviation (SD < 0.05). Compared to the complicated experimental method for the determination of ATPS LLE data, the binodal curves and tie-line empirical equations combined with simple experiments can provide the LLE data for various ATPS.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 98%

Liquid–Liquid Equilibrium of Various Aqueous Two-Phase Systems: Experiment and Correlation

2013

View full text Add to dashboard Cite

show abstract

“…The studies on the third type of surfactant-based biphasic systems (i.e., surfactant + polymer) are less interesting maybe due to their relatively high viscosity and complex phase diagrams . The phase behavior of the (Brij58 (polyoxyethylene cetyl ether) + PEG) system and the salt effect on that has been investigated . Also, prefractionation of membrane protein in the similar biphasic system was successfully carried out …”

Section: Introductionmentioning

confidence: 99%

Partitioning of Cefazolin in Biocompatible Aqueous Biphasic Systems Based on Surfactant

2013

View full text Add to dashboard Cite

In this research, promising aqueous two-phase systems (ATPS) containing polyoxyethylene (20) sorbitan monolaurate (Tween 20) as a quite biocompatible nonionic surfactant and different salts (K2HPO4, MgSO4, and Na3Citrate) were prepared and their extractive potential was evaluated. These ATPS possess top and bottom phases well-stocked in surfactant and salt respectively which can offer appealing characteristics such as low interfacial tension, low volatility, and ease of scaling-up. Ternary phase diagrams of ATPS consisting of Tween 20 and three different salts were obtained and the results were successfully fitted to the Merchuk correlation. The salting-out ability of salts were assessed. Also, the tie-line data were correlated with the Othmer-Tobias equation. Afterward, the partitioning behavior of cefazolin as a broad-spectrum antibiotic in the proposed ATPS was studied at three temperatures (298.15, 302.15, and 306.15 K) and the influences of Na3Citrate and MgSO4 on partition coefficients were justified by Hofmeister series. Furthermore, the effect of tie-line length on partitioning of cefazolin in ATPS was investigated. The experimental data of cefazolin partition coefficients indicated the proper potential of the Tween 20–Na3Citrate–water biphasic system for the bioseparation process.

show abstract

Characterization of aqueous two phase systems by combining lab-on-a-chip technology with robotic liquid handling stations

Amrhein¹,

Schwab²,

Hoffmann³

et al. 2014

Journal of Chromatography A

View full text Add to dashboard Cite

(Surfactant+polymer) interaction parameter studied by (liquid+liquid) equilibrium data of quaternary aqueous solution containing surfactant, polymer, and salt

Cited by 5 publications

References 31 publications

Liquid–Liquid Equilibrium of Various Aqueous Two-Phase Systems: Experiment and Correlation

Liquid–Liquid Equilibrium of Various Aqueous Two-Phase Systems: Experiment and Correlation

Partitioning of Cefazolin in Biocompatible Aqueous Biphasic Systems Based on Surfactant

Characterization of aqueous two phase systems by combining lab-on-a-chip technology with robotic liquid handling stations

Contact Info

Product

Resources

About