Carp-inspired self-regulating marine antifouling coating: Featuring robust controlled release of eugenol and high-efficiency self-healing performance

•A novel self-regulating PDMS coating was successfully synthesized via a one-pot methodology.•The coating possesses the ability to regulate itself to achieve controlled release of antifouling agents.•The multiple hydrogen bonds and disulfide bonds in the coating imparts exceptional self-healing prop...

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Veröffentlicht in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2024-04, Vol.486, p.149929, Article 149929
Hauptverfasser: Liu, Jiahuan, Li, Qiang, Gui, Taijiang, Guo, Hongyu, Zhang, Kai, Meng, Fandong, Zhan, Xiaoli, Liu, Quan, Zhang, Qinghua
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Sprache:eng
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Zusammenfassung:•A novel self-regulating PDMS coating was successfully synthesized via a one-pot methodology.•The coating possesses the ability to regulate itself to achieve controlled release of antifouling agents.•The multiple hydrogen bonds and disulfide bonds in the coating imparts exceptional self-healing properties to the material.•Additionally, the coating exhibits outstanding attributes in terms of anti-fouling, adhesion, and anti-corrosion properties. The practical application of low surface energy polydimethylsiloxane (PDMS) in marine antifouling is significantly limited due to its inadequate static antifouling capability. Herein, integrating a strategy inspired by carps to release antifouling agents with the fouling release properties of low surface energy materials, an innovative self-regulating marine antifouling coating (named PDMS-Pun-x) was developed, which demonstrates remarkable robust ability of controlled release of eugenol and efficient self-healing performance. Under seawater, the coating regulates its inherent hydrophilicity and the content of the surface anti-fouling agent to obtain the ability of controlled releasing eugenol. Compared with other self-renewal coatings, there proves non-heavy metal leaching and no internal self-hydrolysis existing. Moreover, based on the synergistic action of disulfide bonds and hydrogen bonds, the coating demonstrated a notable self-healing performance, with a self-healing rate of 94.06%. Additionally, the substrate of PDMS modified with polyurea provides the coating with excellent resistance against corrosion. This study introduces a highly promising approach towards the advancement of environmentally-friendly and durable marine antifouling coatings.
ISSN:1385-8947
DOI:10.1016/j.cej.2024.149929