Influence of the Molecular Weight of PEG on the Polymer/Salt Phase Diagrams of Aqueous Two-Phase Systems

2016 ◽  
Vol 61 (12) ◽  
pp. 4229-4235 ◽  
Author(s):  
Kamila Wysoczanska ◽  
Eugénia A. Macedo
Keyword(s):  
Molecular Weight ◽  
Phase Diagrams ◽  
Two Phase ◽  
Aqueous Two Phase Systems ◽  
Salt Phase ◽  
Phase Systems

scholarly journals Effects of the polymer molecular weight and type of cation on phase diagrams of polythylene glycol + sulfate salts aqueous two-phase systems

2019 ◽  
Vol 73 (6) ◽  
pp. 375-385
Author(s):  
Gholamhossein Parmoon ◽  
Abdorreza Nafchi ◽  
Mohsen Pirdashti
Keyword(s):  
Molecular Weight ◽  
Magnesium Sulfate ◽  
Phase Diagrams ◽  
Zinc Sulfate ◽  
Two Phase ◽  
Aluminium Sulfate ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Lle Data ◽  
Tie Line

Phase diagrams and liquid ? liquid equilibrium (LLE) data for aqueous two-phase systems (ATPSs) containing zinc sulfate, magnesium sulfate or aluminium sulfate and polyethylene glycols PEG 300, 400 and 600 have been determined at 298.15 K. It was attempted to show how the PEG molecular weight and the type of cation influence the binodal curve, tie line length (TLL) and slope of the tie line (STL). The results have shown that as the PEG molecular weight increases, the two-phase region becomes extended and the binodal curve shifts to the origin. The refractive index and density of ternary (PEG 300,400 and 600 + zinc sulfate/magnesium sulfate/aluminium sulfate + water) systems have been measured to achieve the phase composition and the tie lines. Finally, the effective excluded volume (EEV) model was applied to describe the salting-out ability of the systems. The LLE data from this research may be potentially used for recovering biological molecules like proteins.

Novel phase diagrams of aqueous two-phase systems based on tetrahydrofuran + carbohydrates + water: Equilibrium data and partitioning experiments

2017 ◽  
Vol 433 ◽  
pp. 1-9 ◽  
Author(s):  
Kênia M. Sousa ◽  
Gustavo E.L.O. Maciel ◽  
Filipe S. Buarque ◽  
Adriana J. Santos ◽  
Maria N. Marques ◽  
...  
Keyword(s):  
Phase Diagrams ◽  
Two Phase ◽  
Equilibrium Data ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Water Equilibrium

Poly(vinyl alcohol) as a novel constituent to form aqueous two-phase systems with acetonitrile: Phase diagrams and partitioning experiments

2015 ◽  
Vol 94 ◽  
pp. 317-323 ◽  
Author(s):  
Gustavo de Brito Cardoso ◽  
Isabela Nascimento Souza ◽  
Matheus M. Pereira ◽  
Luiz Pereira Costa ◽  
Mara G. Freire ◽  
...  
Keyword(s):  
Phase Diagrams ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Two Phase ◽  
Aqueous Two Phase Systems ◽  
Phase Systems
Sign in / Sign up

Export Citation Format

Share Document