Hyperbranched polymers as phase forming components in aqueous two-phase extraction

Andres Kulaguin Chicaroux, Manuel Plath, Tim Zeiner

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

This work focusses on the experimental and theoretical investigation of the partitioning of a L-serine in an aqueous two-phase system (ATPS) based on a hyperbranched polymer. As a model ATPS, a polymer system containing a hyperbranched polyesteramide and dextran was chosen. The partitioning of L-serine in this ATPS was studied and compared with the partitioning of L-serine in a conventional ATPS consisting of polyethylene glycol (PEG) and dextran. For the thermodynamic modelling of these ATPS's the Lattice Cluster Theory (LCT) in combination with the Wertheim association theory was used. The LCT allows the incorporation of the hyperbranched polymer architecture in the Helmholtz free energy and the Wertheim association theory considers the influence of the polar groups. As a result, it can be stated that in both ATPS, L-serine is mainly partitioned into the dextran-enriched phase, but in the ATPS based on the hyperbranched polyesteramide and dextran, the L-serine concentration in the dextran-enriched phase is higher. The partitioning of L-serine could be predicted by the used thermodynamic model on basis of the solubility experiments carried out for L-serine in aqueous solutions of phase forming components. Further, this work represents the first application of the used thermodynamic model on a quaternary system.

Originalspracheenglisch
Seiten (von - bis)167-174
Seitenumfang8
FachzeitschriftChemical Engineering and Processing
Jahrgang99
DOIs
PublikationsstatusVeröffentlicht - 1 Jan 2016

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Dextran
Serine
Polymers
Dextrans
Thermodynamics
Association reactions
Polyethylene glycols
Free energy
Solubility
Experiments

Schlagwörter

    ASJC Scopus subject areas

    • !!Chemistry(all)
    • !!Chemical Engineering(all)
    • !!Energy Engineering and Power Technology
    • !!Process Chemistry and Technology
    • !!Industrial and Manufacturing Engineering

    Dies zitieren

    Hyperbranched polymers as phase forming components in aqueous two-phase extraction. / Kulaguin Chicaroux, Andres; Plath, Manuel; Zeiner, Tim.

    in: Chemical Engineering and Processing, Jahrgang 99, 01.01.2016, S. 167-174.

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

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