A study into the effect of POSS nanoparticles on cellulose acetate membranes

Clare Worthley, Kristina Constantopoulos, Milena Ginic-Markovic, Elda Markovic, Stephen Clarke

    Research output: Contribution to journalArticlepeer-review

    40 Citations (Scopus)

    Abstract

    This paper investigates the effect of polyhedral oligomeric silsesquioxane (POSS) nanoparticle inclusion in cellulose acetate (CA) membranes. The synthesis of a novel CA-anchored nanoparticle additive (CA-POSS) is described. Membranes were fabricated with no additive, or either the POSS or CA-POSS as an additive at different weight percent loadings. Nanoparticle dispersion was investigated using scanning electron microscopy. Dynamic mechanical analysis was used to investigate the mechanical strength of the nanocomposite membranes. The effect of nanoparticle inclusion on the filtration properties and compaction behavior of the membranes was also investigated. Compared to the CA control, nanocomposite membranes exhibited superior flux and compaction resistance, and decreased salt rejection and mechanical strength.

    Original languageEnglish
    Pages (from-to)62-71
    Number of pages10
    JournalJournal of Membrane Science
    Volume431
    DOIs
    Publication statusPublished - 5 Mar 2013

    Keywords

    • Mixed matrix membranes
    • Nanocomposite
    • POSS

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