Journal
PROGRESS IN ORGANIC COATINGS
Volume 151, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2020.106107
Keywords
Polydimethylsiloxane; Fouling release; Coating materials; Nanofillers; Avicennia marina
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The study aimed to develop graphene/PDMS-based coatings for preventing fouling organism adhesion, with GOH@Ag nanocomposite showing outstanding antifouling efficiency and pseudo-barnacle adhesion strength.
The purpose of making graphene/polydimethylsiloxane (PDMS)-based coatings is providing a suitable strategy to prevent fouling organism adhesion. In this study, graphene oxide (GO) reduced with Avicennia marina/Silver to achieve GOH@Ag nanocomposite. GOH@Ag, bare GO and multi-Wall Carbon nanotubes (MWCNTs) as nano fillers were individually incorporated into PDMS-based coatings with 0.01, 0.1, and 0.5 %wt. The surface characterization including pseudo-barnacle adhesion strength and water static contact angle and critical surface energy was performed for all samples. Evaluating field immersion was performed due to the samples in the natural seawater. The best results were observed for the sample with 0.5 wt% of GOH@Ag (RMS roughness = 103 nm, pseudo-barnacle adhesion strength =0.16 MPa, critical surface energy = 16 mN/m, static contact angle = 118.8 degrees). The simultaneous presence of A. marina and silver element in the structure of graphenebased nanocomposite showed a synergistic effect on the performance of PDMS-based coatings which achieved outstanding result of antifouling efficiency (N = 18).
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