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Interfacial Behavior of Aqueous Two-Phase Systems Based on Linear and Hyperbranched Polymers
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-03-21 , DOI: 10.1021/acs.jced.7b01001 Andres Kulaguin-Chicaroux 1 , Tim Zeiner 1
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-03-21 , DOI: 10.1021/acs.jced.7b01001 Andres Kulaguin-Chicaroux 1 , Tim Zeiner 1
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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.
中文翻译：
基于线性和超支化聚合物的水两相体系的界面行为
在这项工作中，分析了两种不同的水性两相系统（ATPSs）的界面行为。一种ATPS是通过将聚乙二醇（PEG）和右旋糖酐T40溶解在水中形成的，而第二种ATPS是通过超支化聚酯酰胺（HB）和右旋糖酐T40形成的。通过实验和理论研究了两种ATPS的界面行为。作为热力学模型，使用了与晶格Wertheim模型相结合的晶格簇理论。将该热力学模型与密度梯度理论结合起来，对界面性质进行建模。发现通过旋转滴落法测量的包含HB的ATPS的界面张力低于包含PEG的ATPS的界面张力。而且，测量并建模了相形成组分在界面上的传质。为了测量质量传递，使用了Nitsch池。通过稳态密度梯度理论对传质进行建模。发现葡聚糖的迁移率系数可以从一种系统转移到另一种系统。
更新日期：2018-06-03
中文翻译：
基于线性和超支化聚合物的水两相体系的界面行为
在这项工作中，分析了两种不同的水性两相系统（ATPSs）的界面行为。一种ATPS是通过将聚乙二醇（PEG）和右旋糖酐T40溶解在水中形成的，而第二种ATPS是通过超支化聚酯酰胺（HB）和右旋糖酐T40形成的。通过实验和理论研究了两种ATPS的界面行为。作为热力学模型，使用了与晶格Wertheim模型相结合的晶格簇理论。将该热力学模型与密度梯度理论结合起来，对界面性质进行建模。发现通过旋转滴落法测量的包含HB的ATPS的界面张力低于包含PEG的ATPS的界面张力。而且，测量并建模了相形成组分在界面上的传质。为了测量质量传递，使用了Nitsch池。通过稳态密度梯度理论对传质进行建模。发现葡聚糖的迁移率系数可以从一种系统转移到另一种系统。
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