A versatile approach to grafting biofouling resistant coatings from polymeric membrane surfaces using an adhesive macroinitiator

Milena Ginic-Markovic, Thomas Barclay, Kristina Constantopoulos, Tawfiq Alghamdi, Andrew Blok, Elda Markovic, Amanda Ellis

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    Biofouling is a serious problem for any wetted structure, having a negative influence on applications as diverse as marine transport, implanted medical devices and water treatment. Here, we address this issue by creating a polydopamine-based coating on desalination reverse osmosis membranes incorporating a bromo-macroinitiator for subsequent polymerisation of sulfobetaine monomers into anti-biofouling polymer brushes. Surface characterisation using attenuated total reflectance-Fourier transform infrared spectroscopy and the water contact angle demonstrated the attachment of the polysulfobetaine brushes and that the hydrophilicity increased for the coated membranes. Using a macroinitiator formation time of ten minutes followed by polyzwitterion coating of one hour resulted in a 17% increase in water flux without significant effect on the salt rejection performance. These membranes also exhibited substantial suppression of protein and bacterial attachment of 69% and 88% respectively compared to unmodified membranes.

    Original languageEnglish
    Pages (from-to)63017-63024
    Number of pages8
    JournalRSC Advances
    Volume5
    Issue number77
    DOIs
    Publication statusPublished - 2015

    Fingerprint Dive into the research topics of 'A versatile approach to grafting biofouling resistant coatings from polymeric membrane surfaces using an adhesive macroinitiator'. Together they form a unique fingerprint.

  • Cite this

    Ginic-Markovic, M., Barclay, T., Constantopoulos, K., Alghamdi, T., Blok, A., Markovic, E., & Ellis, A. (2015). A versatile approach to grafting biofouling resistant coatings from polymeric membrane surfaces using an adhesive macroinitiator. RSC Advances, 5(77), 63017-63024. https://doi.org/10.1039/c5ra09370h