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    • 10. 发明申请
    • ULTRATHIN COMPOSITE MEMBRANES
    • 超薄复合膜
    • WO1993025300A1
    • 1993-12-23
    • PCT/US1993005384
    • 1993-06-07
    • RESEARCH CORPORATION TECHNOLOGIES, INC.MARTIN, Charles, R.LIU, Chao
    • RESEARCH CORPORATION TECHNOLOGIES, INC.
    • B01D69/12
    • B01D69/125B01D69/02G01N27/40
    • The present invention relates to a method of forming defect-free ultrathin film composite membranes by the photochemical synthesis of an ultrathin polymer film on the surface of a microporous support membrane. In one particular embodiment, the method entails placing a support membrane on a filter paper which is saturated with a solution of the desired monomer(s). The solution then wicks to the top of the membrane, covering the surface with a thin solution film, where it is subjected to irradiation by ultraviolet (UV) light to initiate the polymerization of the ultrathin polymer film. The rate of polymerization can be enhanced by adding a photoinitiator to the gas phase above the membrane or into solution with the monomer or monomers to induce radical polymerization. The method results in a defect-free ultrathin composite membrane. In addition, to minimize photon penetration depth and confine the polymerization predominantly to the membrane surface, the incident at which the UV light strikes the membrane surface is kept at an acute angle. The ultrathin film composite membranes can be used in a vast number of chemical separation processes, bioreactors and sensors, energy conversion and drug delivery systems.
    • 本发明涉及通过微孔聚合物膜的光化学合成在微孔载体膜的表面上形成无缺陷的超薄膜复合膜的方法。 在一个具体实施方案中,该方法需要将支撑膜放置在用所需单体的溶液饱和的滤纸上。 然后将溶液吸到膜的顶部,用薄的溶液膜覆盖表面,在那里用紫外线(UV)光照射以引发超薄聚合物膜的聚合。 通过向膜上方的气相或与单体或单体的溶液中加入光引发剂以引发自由基聚合,可以提高聚合速率。 该方法产生无缺陷的超薄复合膜。 此外,为了使光子穿透深度最小化并将聚合主要限制在膜表面,UV光照射到膜表面的入射处被保持为锐角。 超薄膜复合膜可用于大量化学分离过程,生物反应器和传感器,能量转换和药物输送系统。