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    • 2. 发明授权
    • Membranes having selective permeability
    • 具有选择性渗透性的膜
    • US5358556A
    • 1994-10-25
    • US988935
    • 1993-02-25
    • Richard B. KanerMark R. AndersonHoward ReissBenjamin R. Mattes
    • Richard B. KanerMark R. AndersonHoward ReissBenjamin R. Mattes
    • B01D71/60B01D53/22B01D67/00B01D69/02B01D71/72H01B1/12
    • B01D67/0093B01D53/228B01D69/02B01D71/72H01B1/128Y02C10/10Y10S264/48Y10S264/62
    • Dopable, fully dense polymer membranes are used to form membranes having selective permeabilities. To improve selectivity, the membranes may be subjected to chemical or electrochemical treatment with electron donors or acceptors to alter the doping level of the polymer membrane, generally in a reversible fashion. This leads to significant changes in gas permeation rates relative to what is observed for the non-doped, fully dense polymers. This change in doping level of the polymer films can be precisely controlled by varying the concentration and nature of chemical dopants used. Desirable changes in permeation rates are achieved by a treatment which comprises a reversal doping of the polymeric material, followed by removal of the dopants (to provide an "undoped" polymer). Further addition of controlled amounts of at least one dopant species to the undoped polymer by a second, "redoping" procedure can still more dramatically change the permeability of large species, leading to particularly large separation factors.
    • 可掺杂的,完全致密的聚合物膜用于形成具有选择性渗透性的膜。 为了提高选择性,膜可以用电子给体或受体进行化学或电化学处理,以改变聚合物膜的掺杂水平,通常以可逆的方式。 这导致相对于未掺杂的,完全致密的聚合物观察到的气体渗透速率的显着变化。 可以通过改变所用化学掺杂剂的浓度和性质来精确地控制聚合物膜的掺杂水平的这种变化。 渗透速率的期望变化通过包括反向掺杂聚合物材料,然后除去掺杂剂(以提供“未掺杂的”聚合物)的处理来实现。 通过第二个“重做”程序进一步向未掺杂的聚合物添加受控量的至少一种掺杂剂物质仍然可以更大地改变大物种的渗透性,导致特别大的分离因子。
    • 3. 发明授权
    • Membranes having selective permeability
    • 具有选择性渗透性的膜
    • US5096586A
    • 1992-03-17
    • US573950
    • 1990-08-28
    • Richard B. KanerMark R. AndersonBenjamin R. MattesHoward Reiss
    • Richard B. KanerMark R. AndersonBenjamin R. MattesHoward Reiss
    • B01D71/60B01D53/22B01D67/00B01D69/02B01D71/72H01B1/12
    • B01D67/0093B01D53/228B01D69/02B01D71/72H01B1/128Y02C10/10Y10S264/48Y10S264/62
    • Dopable, fully dense polymer membranes are used to form membranes having selective permeabilities. To improve selectivity, the membranes may be subjected to chemical or electrochemical treatment with electron donors or acceptors to alter the doping level of the polymer membrane, generally in a reversible fashion. This leads to significant changes in gas permeation rates relative to what is observed for the non-doped, fully dense polymers. This change in doping level of the polymer films can be precisely controlled by varying the concentration and nature of chemical dopants used. Desirable changes in permeation rates are achieved by a treatment which comprises a reversal doping of the polymeric material, followed by removal of the dopants (to provide an "undoped" polymer). Further addition of controlled amounts of at least one dopant species to the undoped polymer by a second, "redoping" procedure can still more dramatically change the permeability of large species, leading to particularly large separation factors.
    • 可掺杂的,完全致密的聚合物膜用于形成具有选择性渗透性的膜。 为了提高选择性,膜可以用电子给体或受体进行化学或电化学处理,以改变聚合物膜的掺杂水平,通常以可逆的方式。 这导致相对于未掺杂的,完全致密的聚合物观察到的气体渗透速率的显着变化。 可以通过改变所用化学掺杂剂的浓度和性质来精确地控制聚合物膜的掺杂水平的这种变化。 渗透速率的期望变化通过包括反向掺杂聚合物材料,然后除去掺杂剂(以提供“未掺杂的”聚合物)的处理来实现。 通过第二个“重做”程序进一步向未掺杂的聚合物添加受控量的至少一种掺杂剂物质仍然可以更大地改变大物种的渗透性,导致特别大的分离因子。