Encyclopedia of Membranes

2016 Edition
| Editors: Enrico Drioli, Lidietta Giorno

Functionalized Membrane

  • Teresa Poerio
Reference work entry
DOI: https://doi.org/10.1007/978-3-662-44324-8_1745

The functionalized membranes are membranes modified with appropriate functional groups that introduce new membrane properties, affinity or catalytic, for improving the selectivity or creating an entirely novel separation function (Ulbricht 2006).

The usual surface modifications in the literature are the following: coating (Dickson et al. 1998), self-assembly (Luo et al. 2005), chemical treatment (Van der Bruggen 2009), plasma treatment (De Geyter et al. 2008), and surface graft polymerization (Belfer et al. 2004).

The coating is a physical surface modification that can be obtained via one of the following mechanisms:
  1. (a)

    Adsorption/adhesion – the functional layer is only physically fixed on the base material; the binding strength can be increased via multiple interactions between functional groups in the macromolecular layer and on the solid surface.

  2. (b)

    Interpenetration via mixing between the added functional polymer and the base polymer in an interphase.

  3. (c)


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  1. Belfer S, Fainshtain R, Purinson Y, Gilron J, Nystrӧm M, Mänttäri M (2004) Modification of NF membrane properties by in situ redox initiated graft polymerization with hydrophilic monomers. J Membr Sci 239:5–64CrossRefGoogle Scholar
  2. De Geyter N, Morent R, Gengembre L, Leys C, Payen E, Van Vlierberghe S, Schacht E (2008) Increasing the hydrophobicity of a PP film using a helium/CF4 DBD treatment at atmospheric pressure. Plasma Chem Plasma Process 28:289–298CrossRefGoogle Scholar
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  6. Van der Bruggen B (2009) Chemical modification of polyether sulfone nanofiltration membranes: a review. J Appl Polym Sci 114:630–642CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Institute on Membrane TechnologyNational Research Council of Italy, ITM-CNRRendeItaly