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首页> 外文期刊>Advanced Functional Materials >Ultra-Thin Self-Assembled Protein-Polymer Membranes: A New Pore Forming Strategy
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Ultra-Thin Self-Assembled Protein-Polymer Membranes: A New Pore Forming Strategy

机译：超薄自组装蛋白-聚合物膜：一种新的孔形成策略

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摘要

Self-assembled membranes offer a promising alternative for conventional membrane fabrication, especially in the field of ultrafiltration. Here, a new pore-making strategy is introduced involving stimuli responsive protein-polymer conjugates self-assembled across a large surface area using drying-mediated interfacial self-assembly. The membrane is flexible and assembled on porous supports. The protein used is the cage protein ferritin and resides within the polymer matrix. Upon denaturation of ferritin, a pore is formed which intrinsically is determined by the size of the protein and how it resides in the matrix. Due to the self-assembly at interfaces, the membrane constitutes of only one layer resulting in a membrane thickness of 7 nm on average in the dry state. The membrane is stable up to at least 50 mbar transmem-brane pressure, operating at a flux of about 21 000-25 000 L m~(-2) h~(-1) bar~(-1) and displayed a preferred size selectivity of particles below 20 nm. This approach diversifies membrane technology generating a platform for "smart" self-assembled membranes.
机译：自组装膜为常规膜的制造提供了有希望的替代方法，特别是在超滤领域。在这里，引入了一种新的制孔策略，其中涉及使用干燥介导的界面自组装在大表面积上自组装的刺激响应蛋白-聚合物共轭物。该膜是柔性的，并组装在多孔载体上。所使用的蛋白质是笼状蛋白质铁蛋白，并位于聚合物基质中。铁蛋白变性后，会形成一个孔，该孔本质上由蛋白质的大小及其在基质中的位置决定。由于在界面处的自组装，该膜仅由一层构成，导致在干燥状态下平均膜厚度为7 nm。该膜在至少50 mbar的跨膜压力下是稳定的，在约21 000-25 000 L m〜（-2）h〜（-1）bar〜（-1）的通量下运行，并显示出优选的尺寸低于20 nm的颗粒的选择性。这种方法使膜技术多样化，从而为“智能”自组装膜提供了平台。

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  • 来源
    《Advanced Functional Materials》 |2014年第43期|6762-6770|共9页
  • 作者

    Patrick van Rijn; Mural Tutus; Christine Kathrein; Nathalie C. Mougin; Hyunji Park; Christopher Hein; Marco P. Schuerings; Alexander Boeker;

  • 作者单位

    DWI-Leibniz-Institute for Interactive Materials RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany,Lehrstuhl fuer Makromolekulare Materialien und Oberflaechen RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany,University of Groningen University Medical Center Groningen Department of Biomedical Engineering-FB40 W. J. Kolff Institute for Biomedical Engineering and Materials Science A. Deusinglaan 1, 9713, AV, Groningen, The Netherlands;

    DWI-Leibniz-Institute for Interactive Materials RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany,Aachener Verfahrenstechnik RWTH Aachen University Turmstrasse 46, D-52056, Aachen, Germany;

    DWI-Leibniz-Institute for Interactive Materials RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany,Lehrstuhl fuer Makromolekulare Materialien und Oberflaechen RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany;

    DWI-Leibniz-Institute for Interactive Materials RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany,Lehrstuhl fuer Makromolekulare Materialien und Oberflaechen RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany;

    DWI-Leibniz-Institute for Interactive Materials RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany,Lehrstuhl fuer Makromolekulare Materialien und Oberflaechen RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany;

    DWI-Leibniz-Institute for Interactive Materials RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany,Aachener Verfahrenstechnik RWTH Aachen University Turmstrasse 46, D-52056, Aachen, Germany;

    DWI-Leibniz-Institute for Interactive Materials RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany,Lehrstuhl fuer Makromolekulare Materialien und Oberflaechen RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany;

    DWI-Leibniz-Institute for Interactive Materials RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany,Lehrstuhl fuer Makromolekulare Materialien und Oberflaechen RWTH Aachen University Forckenbeckstrasse 50, D-52056 Aachen, Germany;

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