Enhanced antifouling property of polydimethylsiloxane-CuO nanocomposite in marine environment

[Display omitted] •PDMS-CuO nanocomposite (NC) exhibits enhanced hydrophobicity.•NC deterred Staphylococcus lentus biofilm formation with a 3 log reduction.•NC significantly prevents in situ microalgal colonization.•Biofouling loading and surface area coverage by macrofoulants were reduced on NC.•PD...

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Bibliographic Details
Published in:Materials letters 2021-10, Vol.301, p.130342, Article 130342
Main Authors: Ramanujam Padmavathi, Alwar, Sriyutha Murthy, P., Das, Arindam, Subba Rao, Toleti
Format: Article
Language:English
Subjects:
Adhesion
Adhesion prevention
Algae
Anti-microfouling
Antifouling
Biofouling
Chemical precipitation
Chemical synthesis
Coastal waters
Copper oxides
CuO nanofiller
Macrofouling control
Marine environment
Materials science
Nanocomposites
Nanoparticles
Polydimethylsiloxane
Release agents
Toxicity
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Summary:[Display omitted] •PDMS-CuO nanocomposite (NC) exhibits enhanced hydrophobicity.•NC deterred Staphylococcus lentus biofilm formation with a 3 log reduction.•NC significantly prevents in situ microalgal colonization.•Biofouling loading and surface area coverage by macrofoulants were reduced on NC.•PDMS-CuO NC has antifouling potential for marine applications. Increased adhesion and biofilm formation by marine microalgae as well as inhibition of settlement of invertebrate larval forms on polydimethylsiloxane (PDMS) foul release coatings is a challenge to overcome. Copper oxide nanoparticles (CuO-NP) were synthesized by a wet chemical precipitation route and incorporated into PDMS foul release surfaces to improve its anti-microfouling nature. In situ antifouling performance of PDMS-CuO nanocomposite (NC) was evaluated in coastal waters and compared with plain PDMS surface. Adhesion and settlement of microalgae and macrofoulers and their succession were monitored for 7 and 90 days respectively. Plain PDMS surfaces were abundantly colonized by microalgae (1.3 × 103 cm−2), wherein significant (p 
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2021.130342