Graft polymeric membranes and ion-exchange membranes formed therefrom
    8.
    发明授权
    Graft polymeric membranes and ion-exchange membranes formed therefrom 失效
    由其形成的接枝聚合物膜和离子交换膜

    公开(公告)号:US06359019B1

    公开(公告)日:2002-03-19

    申请号:US08967960

    申请日:1997-11-12

    IPC分类号: C08J522

    摘要: Graft polymeric membranes in which one or more trifluorovinyl aromatic monomers are radiation graft polymerized to a preformed polymeric base film are provided, as well as ion-exchange membranes prepared therefrom. Preferred monomers include substituted &agr;, &bgr;, &bgr;-trifluorostyrenes and trifluorovinyl naphthalenes which are activated towards the grafting reaction or facilitate the introduction of more than one ion-exchange group per monomer unit in the grafted chains. The ion-exchange membranes are useful in dialysis applications, and particularly in electrochemical applications, for example as membrane electrolytes in electrochemical fuel cells and electrolyzers.

    摘要翻译: 提供其中一个或多个三氟乙烯基芳族单体被辐射接枝聚合成预制的聚合物基膜的接枝聚合物膜以及由其制备的离子交换膜。 优选的单体包括被取代的α,β,β-三氟苯乙烯和三氟乙烯基萘,其被接触反应活化或促进每个单体单元在接枝链中引入多于一个离子交换基团。 离子交换膜可用于透析应用,特别是在电化学应用中,例如作为电化学燃料电池和电解器中的膜电解质。