Tailored design of Cu2O nanocube/silicone composites as efficient foul-release coatings

Mohamed S. Selim, Sherif A. El-Safty, Maher A. El-Sockary, Ahmed I. Hashem, Ossama M. Abo Elenien, Ashraf M. El-Saeed, Nesreen A. Fatthallah

    Research output: Contribution to journalArticle

    25 Citations (Scopus)

    Abstract

    Environmental concerns about the use of toxic antifoulants have increased the demand to develop novel, environmentally-friendly antifouling materials. Silicone coatings are currently the most effective non-toxic alternatives. This study focused on developing a model for silicone foul-release nanocomposites that were successfully designed, fabricated, characterized, and tailored toward foul-release (FR) coatings. A series of elastomeric polydimethyl-siloxane (PDMS)/Cu2O nanocube composites with different nanofiller concentrations was successfully synthesized, for the first time, as FR coatings via solution casting technique. Emphasis was given to the study of the physicomechanical and surface properties, as well as the easy release efficiency of the elastomer PDMS enriched with Cu2O nanocubes. The bulk properties of the nanocomposites appeared unchanged after adding low amounts of nanofillers. By contrast, surface properties such as contact angle and surface free energy were improved, and the settlement resistance and easy release behavior of the nanocomposites were enhanced. The surfaces were further proven to have reversible tunable properties and are thus renewable in water. The antifouling property of the nanocomposites was investigated by laboratory assays involving microfoulants such as Gram-positive and Gram-negative bacteria, as well as yeast organisms, for 30 days. Exposure tests showed that lower surface energy and elastic modulus of coatings resulted in less adherence of marine microfouling. The most profound effect recorded was the reduction of fouling settlement with nanofiller loadings of up to 0.1% Cu2O nanocubes. Thus, the good foul release and long-term durability confirmed that the present strategy was an attractive nontoxic and environmentally-friendly alternative to the existing antifouling systems. This journal is

    Original languageEnglish
    Pages (from-to)19933-19943
    Number of pages11
    JournalRSC Advances
    Volume5
    Issue number26
    DOIs
    Publication statusPublished - 2015

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    Silicones
    Nanocomposites
    Siloxanes
    Coatings
    Composite materials
    Surface properties
    Silicone coatings
    Elastomers
    Poisons
    Fouling
    Interfacial energy
    Yeast
    Free energy
    Contact angle
    Assays
    Bacteria
    Casting
    Durability
    Elastic moduli
    Water

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)

    Cite this

    Selim, M. S., El-Safty, S. A., El-Sockary, M. A., Hashem, A. I., Abo Elenien, O. M., El-Saeed, A. M., & Fatthallah, N. A. (2015). Tailored design of Cu2O nanocube/silicone composites as efficient foul-release coatings. RSC Advances, 5(26), 19933-19943. https://doi.org/10.1039/c5ra01597a

    Tailored design of Cu2O nanocube/silicone composites as efficient foul-release coatings. / Selim, Mohamed S.; El-Safty, Sherif A.; El-Sockary, Maher A.; Hashem, Ahmed I.; Abo Elenien, Ossama M.; El-Saeed, Ashraf M.; Fatthallah, Nesreen A.

    In: RSC Advances, Vol. 5, No. 26, 2015, p. 19933-19943.

    Research output: Contribution to journalArticle

    Selim, MS, El-Safty, SA, El-Sockary, MA, Hashem, AI, Abo Elenien, OM, El-Saeed, AM & Fatthallah, NA 2015, 'Tailored design of Cu2O nanocube/silicone composites as efficient foul-release coatings', RSC Advances, vol. 5, no. 26, pp. 19933-19943. https://doi.org/10.1039/c5ra01597a
    Selim MS, El-Safty SA, El-Sockary MA, Hashem AI, Abo Elenien OM, El-Saeed AM et al. Tailored design of Cu2O nanocube/silicone composites as efficient foul-release coatings. RSC Advances. 2015;5(26):19933-19943. https://doi.org/10.1039/c5ra01597a
    Selim, Mohamed S. ; El-Safty, Sherif A. ; El-Sockary, Maher A. ; Hashem, Ahmed I. ; Abo Elenien, Ossama M. ; El-Saeed, Ashraf M. ; Fatthallah, Nesreen A. / Tailored design of Cu2O nanocube/silicone composites as efficient foul-release coatings. In: RSC Advances. 2015 ; Vol. 5, No. 26. pp. 19933-19943.
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