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    • 23. 发明授权
    • Convective electrohydrodynamic fluid membranes
    • 对流电动力学流体膜
    • US5433857A
    • 1995-07-18
    • US963480
    • 1992-10-16
    • Richard D. NobleNoel A. Clark
    • Richard D. NobleNoel A. Clark
    • B01D53/32B01D61/38
    • B01D61/38B01D53/326
    • A fluid membrane is described, termed the electroconvective liquid crystal membrane (ECLCM), comprised of a sandwich-like configuration in which a fluid layer is contained within a structure. The structure containing the fluid layer separates distinct regions having different concentrations of one or more diffusant species and is capable of being accessed by the diffusant species. The fluid layer is comprised of any fluid in which an electrohydrodynamic (EHD) flow can be induced, including liquid crystals and liquid crystal-like fluids. The ECLCM includes means for applying an electric field to the fluid layer such that an EHD flow is induced within the fluid layer. The EHD flow alters the passage of the diffusant species across the ECLCM. The fluid layer may be modified by the addition of other components which act as carriers to the passage of selected diffusants. These additional components move in the EHD flow and can be chemically bonded to the fluid layer, added as dopants into the fluid layer, or may be separate solid or liquid phases of other materials not soluble in the fluid layer. The membrane of the present invention can function in an electrochemically modulated complexation (EMC) process wherein a complexing agent is added to the fluid layer and electrolyzed to high and low affinity redox states for separation of different molecular species. The present invention includes a method for separating and purifying molecules.
    • 描述了称为电对流液晶膜(ECLCM)的流体膜,其包括其中流体层包含在结构内的夹心状构造。 包含流体层的结构分离具有不同浓度的一种或多种扩散物质的不同区域,并且能够被扩散物质接近。 流体层由其中可以诱导电动力学(EHD)流的任何流体组成,包括液晶和液晶状流体。 ECLCM包括用于向流体层施加电场的装置,使得在流体层内诱导EHD流动。 EHD流量改变扩散物种通过ECLCM。 流体层可以通过添加作为载体的其它成分而被修饰,以使所选择的扩散剂通过。 这些附加组件在EHD流中移动并且可化学键合到流体层,作为掺杂剂添加到流体层中,或者可以是不溶于流体层的其它材料的分离的固体或液相。 本发明的膜可以在电化学调制的络合(EMC)方法中起作用,其中将络合剂加入到流体层中并电解成用于分离不同分子种类的高和低亲和性氧化还原状态。 本发明包括分离和分离分子的方法。