Extruded thin wall polyether block amide membrane tubing and module

    公开(公告)号:GB2606046A

    公开(公告)日:2022-10-26

    申请号:GB202118313

    申请日:2021-12-16

    Abstract: A thin-walled polyether block amide (PEBA) tube 40 with a thickness of no greater than 100 micrometres. The tubes may be formed by extruding a PEBA copolymer. The tube may also comprise a permeable support 10. This support may be made of a metal or polymer and may be a braided sleeve. The support may be configured either inside or outside the PEBA tube. The support may be porous with the PEBA having been melted into the pores of the support. The support may have an open area of 60 % or more. In embodiments, the tube wall thickness may be no greater than 75 micrometres. The tube may comprise additives to improve mechanical strength, desiccants to increase moisture vapour transfer rate and biocides. The tubes may form part of a pervaporation module.

    Composite ion exchange membranes
    12.
    发明专利

    公开(公告)号:GB2562570B

    公开(公告)日:2022-09-14

    申请号:GB201803751

    申请日:2018-03-08

    Abstract: An anion exchange membrane is made by mixing 2 trifluoroMethyl Ketone [nominal] (1.12 g, 4.53 mmol), 1 BiPhenyl (0.70 g, 4.53 mmol), methylene chloride (3.0 mL), trifluoromethanesulfonic acid (TFSA) (3.0 mL) to produce a pre-polymer. The pre-polymer is then functionalized to produce an anion exchange polymer. The pre-polymer may be functionalized with trimethylamine in solution with water. The pre-polymer may be imbibed into a porous scaffold material, such as expanded polytetrafluoroethylene to produce a composite anion exchange membrane.

    Anion exchange lonomer with a poyarylene backbone and anion exchange membrane incorporating same

    公开(公告)号:GB2598828A

    公开(公告)日:2022-03-16

    申请号:GB202109647

    申请日:2021-07-02

    Abstract: An anion exchange ionomer contains a fluorinated, ether-free backbone, and a fluorinated ether based quaternary ammonium functional group: said backbone comprises a copolymer of a polyarylene and a fully fluorinated alkyl hydrocarbon, said hydrocarbon unit having a fluorinated ether side group. Such a polymer is produced by reaction of an arylene unit with 2-bromo-1,1,2,2-tetrafluoroethylene trifluorovinyl ether in the presence of a strong acid. The novel polymer has improved chemical and mechanical stability as compared to the state-of-the-art materials for incorporation in anion exchange membrane.

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