ArticleFrontiers in chemistry2025
A wear-resistant coating with combined mechanical and antifouling properties for potential underwater cleaning applications.
Article in Frontiers in chemistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Silicone-based low-surface-energy antifouling coatings are environmentally friendly, but their widespread application is hindered by the inherent challenge of achieving a balance between mechanical durability and antifouling efficacy. Methods: This study developed a novel multifunctional anchoring material, N,N'-bis(12-hydroxystearoyl)-1,3-phenylenediamine (A), via a condensation reaction. Silicone antifouling coatings were then synergistically modified with A, molybdenum disulfide (MoS2), and polytetrafluoroethylene (PTFE), followed by room-temperature crosslinking to form a composite coating. Results: The incorporation of 1% A significantly enhanced the coating's performance: surface roughness was reduced by 33% (from 1.12 μm to 0.75 μm), the water contact angle increased from 118.2° to 122.7°, and tensile strength was improved by 85% (from 1.08 MPa to 2.00 MPa). The elastic modulus increased by 130%, while underwater friction decreased by 64% (from 2.41 ± 0.09 N to 0.87 ± 0.04 N). The coating demonstrated exceptional durability, with an average surface roughness (Sa) remaining below 2.65 μm after 2000 abrasion cycles. Furthermore, it exhibited outstanding self-cleaning efficiency (>97.1 ± 0.87%) and antibacterial rates (>94.5 ± 1.78%). Marine field tests confirmed effective antifouling performance for over 90 days during peak fouling season. Discussion: The synergistic effect of A, MoS
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