Inkjet Printed Polyelectrolytes for Microfluidic Paper-based Analytical Devices

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientific

    Abstract

    Paper-based microfluidic devices can provide practical
    analytics platforms for applications such as point-of-care
    medical diagnostics. So far immobilisation or separation of
    analytes on such devices has received limited attention. This
    study introduces inkjet printed polyelectrolyte patterns as
    possible platforms for immobilisation of cationic and anionic
    compounds through surface charge interaction. Both cationic
    (polydiallyldimethylammonium chloride) and anionic (sodium
    polyacrylate) polyelectrolytes were inkjet printed on a custom
    designed porous pigment coating, having fine particle internal
    pore structure to ensure high surface contact between the
    analytical sample and modified pore walls. Printed
    polyelectrolyte patterns were themselves largely invisible,
    including under UV light. In a proof of principle test, a
    controllable degree of separation of anionic Uranine and
    Tartrazine dyes from aqueous solution passing through a printed
    cationic polyelectrolyte region could be observed. However,
    weakly cationic Rhodamine B could not be captured on anionic
    regions.
    Original languageEnglish
    Title of host publication32nd International Conference on Digital Printing Technologies (NIP)
    Subtitle of host publicationTechnical Program and Proceedings
    PublisherIS&T, The Society for Imaging Science and Technology
    Pages343-347
    Number of pages5
    ISBN (Electronic)978-0-89208-323-7
    ISBN (Print)978-0-89208-322-0
    Publication statusPublished - 12 Sep 2016
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventInternational Conference on Digital Printing Technologies and Digital Fabrication - Manchester, United Kingdom
    Duration: 12 Sep 201616 Sep 2016
    Conference number: 32

    Publication series

    NameInternational Conference on Digital Printing Technologies (NIP)
    PublisherIS&T: The Society for Imaging Science and Technology
    Volume32
    ISSN (Print)2169-4362
    ISSN (Electronic)2169-4451

    Conference

    ConferenceInternational Conference on Digital Printing Technologies and Digital Fabrication
    Abbreviated titleNIP
    CountryUnited Kingdom
    CityManchester
    Period12/09/201616/09/2016

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