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

Chicaroux, Andres Kulaguin; Plath, Manuel; Zeiner, Tim

doi:10.1016/j.cep.2015.07.022

Cited by 12 publications

(12 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Expressions for the Wertheim association term to the Gibbs energy or free energy based on lattice models have been reported previously in the literature . The main difference of these expressions and the ones presented here is the introduction of the total number of sites on species i M i in the MAE.…”

Section: Associating Lattice Cluster Theorymentioning

confidence: 99%

“…A new consistent expression for an arbitrary number of association sites is presented here and used for the development of ALCT. ALCT can be seen as an extension of the theory from the groups of Enders and Zeiner; however, constructed in such a way that parameters are transferable among components with the same groups but different molar mass. We achieved this by transferring the continuum theory of Joslin et al to the lattice.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Associating lattice cluster theory and application to modeling oleic acid + formic acid + formoxystearic acid

et al. 2018

View full text Add to dashboard Cite

The associating lattice cluster theory (ALCT) is developed in this work. It is especially useful for describing mixtures of oligomers of varying architecture. As the influence of the structure is predicted, it can also be applied in cases in which pure component data are lacking. ALCT is used here for the calculation of liquid–liquid equilibria (LLE) in the system oleic acid (OA) + formic acid (FA) + formoxystearic acid that is interesting for biopolymer production. Experimental studies of LLE in that system were carried out at 296, 313, and 333 K. Ternary mixtures were prepared from the educts OA and FA using heterogeneous acidic catalysis. Quantitative NMR spectroscopy was applied for the analysis. For the educt system also the excess enthalpy was studied by isothermal titration calorimetry. The prediction of the ternary LLE by ALCT succeeds. © 2018 American Institute of Chemical Engineers AIChE J, 65: 783–791, 2019

show abstract

Section: Associating Lattice Cluster Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Associating lattice cluster theory and application to modeling oleic acid + formic acid + formoxystearic acid

et al. 2018

View full text Add to dashboard Cite

show abstract

“…By the number of possible end groups, several applications in drug delivery systems or in process engineering are suggested . There are already some works on the phase behavior and the application of this new type of ATPS, − which show that the application of this novel ATPS can lead to a favorable partitioning of the biomolecules and lower the viscosity. To design or optimize an extraction process, besides the knowledge of liquid–liquid equilibrium (LLE) data, also the interfacial behavior is essential.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Behavior of Aqueous Two-Phase Systems Based on Linear and Hyperbranched Polymers

Kulaguin-Chicaroux

Zeiner

2018

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

In this work, the interfacial behavior of two different aqueous two-phase systems (ATPSs) was analyzed. One ATPS is formed by the dissolution of polyethylene glycol (PEG) and dextran T40 in water, and the second ATPS is formed by a hyperbranched polyesteramide (HB) and dextran T40. The interfacial behavior of both ATPSs was investigated experimentally and theoretically. As a thermodynamic model, the lattice cluster theory combined with a lattice Wertheim model was used. This thermodynamic model was combined with density gradient theory to model the interfacial properties. It was found that the interfacial tension, which was measured by the spinning drop method, of the ATPS containing the HB was lower than the interfacial tension of the ATPS containing the PEG. Moreover, the mass transfer of the phase forming components across the interface was measured and modeled. To measure the mass transfer, a Nitsch cell was used. The mass transfer was modeled by the instationary density gradient theory. It was found that the mobility coefficient of dextran could be transferred from one system to the other one.

show abstract

“…26 HBPs can be used as a phase forming component for aqueous two-phase systems (ATPS) based on advantages of the lower viscosity, biocompatibility, thermal and chemical stability, and a wide range of different functional end groups. 27 Much research has been devoted to designing various advanced materials based on highly branched polymers. 28−31 The synthesis of highly branched polymers with precise structure is a great challenge for polymer science and attracts more and more attention.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Thus, there are many advanced applications of HBPs in chemical engineering . HBPs can be used as a phase forming component for aqueous two-phase systems (ATPS) based on advantages of the lower viscosity, biocompatibility, thermal and chemical stability, and a wide range of different functional end groups . Much research has been devoted to designing various advanced materials based on highly branched polymers. − …”

Section: Introductionmentioning

confidence: 99%

Relationships between Architectures and Properties of Highly Branched Polymers: The Cases of Amorphous Poly(trimethylene carbonate) and Crystalline Poly(ε-caprolactone)

et al. 2016

View full text Add to dashboard Cite

Highly branched polymers (HBPs) are a special class of functional polymeric materials and possess unique properties due to their unique topological structure. A new series of highly branched linear-comb and star-comb amorphous poly(trimethylene carbonate)s (PTMC) and crystalline poly(ε-caprolactone)s (PCL) with well-defined structure and high molecular weight were first synthesized using hydroxylated polybutadiene (HPB) as macroinitiators by simple "one-step" and "graft from" strategies. It is expected that the impact of long-chain, highly branched architecture on the properties of amorphous and crystalline polymers, respectively, is different. We explored systematically for the first time the effect and comparison of branched architectures on the physical and chemical properties of highly branched PTMCs and PCLs, including the intrinsic viscosity, glass transition, thermal degradation, creep property, rheological property, and crystallization and melting behaviors. It is found that the intrinsic viscosities in solution for both comb-branched PTMCs and PCLs were much lower compared with their linear and star counterparts arise from more compact structure and smaller hydrodynamic volumes. For amorphous PTMC, the creep strain and rate increased remarkably with degree of branching increasing due to the shorter side chains making it difficult for the highly branched molecules to entangle. For crystalline PCL, both WAXD and DSC analysis of PCLs with different topological structures indicated that the comb branched architectures have no significant influence on the crystal structure of PCL, but greatly promote the crystallization behavior, e.g., higher crystallinities. The deep understanding of structure-property relationship expects to guide the synthesis of designed functional polymer materials and the processing of polymer products.

show abstract

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

Cited by 12 publications

References 42 publications

Associating lattice cluster theory and application to modeling oleic acid + formic acid + formoxystearic acid

Associating lattice cluster theory and application to modeling oleic acid + formic acid + formoxystearic acid

Interfacial Behavior of Aqueous Two-Phase Systems Based on Linear and Hyperbranched Polymers

Relationships between Architectures and Properties of Highly Branched Polymers: The Cases of Amorphous Poly(trimethylene carbonate) and Crystalline Poly(ε-caprolactone)

Contact Info

Product

Resources

About