Anti-fouling durability and adaptive adjustability of lubrication
A recent research presents a new marine anti-fouling coating inspired by the P. pavoninus spider. The coating utilises coumarin-based reversible chemical bonds to dynamically adjust lubrication and improve durability. It offers efficient self-cleaning and antimicrobial properties, leading to impressive results in marine environments.
Slippery liquid-infused porous surface (SLIPS) is received widespread attention in the anti-fouling field because of its dynamic slippery surface, but the limited effect of physical “anti-adherence” and the problem of lubricant loss restrict its application for practical marine anti-fouling. Inspired by the self-defensive function of P. pavoninus’s poisonous mucus, a SLIPS based on the reversible chemical bonds and the antibacterial effect of coumarin (CmSLIPS) is prepared, which addresses these disadvantages by responsively adaptive lubricity and durability. The CmSLIPS enables the “locking” and “unlocking” mode between lubricant and matrix via the reversible photodimerization of coumarin. It regulates the surface lubricity to adapt to the anti-fouling demand. The reversible chemical bonds of lubricant and matrix reduce lubricant loss and enhance the lubricant stability and anti-fouling durability.
Event Tip: EC Conference Bio-based & Water-based Coatings
Unlock the future of sustainable coatings at the EC Conference Bio-based & Water-based Coatings 2024! This conference serves as a focal point for scientists and experts in bio-based, water-based coatings, and sustainability. Join us on November 5th – 6th, 2024, in Cologne, Germany, for a deep dive into the latest advancements, breakthroughs, and trends.
Connect with leading experts, researchers, and industry leaders who will share invaluable insights and knowledge. The conference provides a unique platform for networking, enabling you to ask questions and engage with the right people in the field. Hurry and take advantage of the early bird ticket offer available until September 3rd! Don’t miss this opportunity to secure your spot at the forefront of bio-based and water-based coatings technology! Register now!
In addition to the physical anti-adhesive barrier of SLIPS, the excellent antimicrobial property of coumarin groups further enhances the “biocidal” anti-fouling effect to improve long-term anti-fouling durability. In summary, the CmSLIPS has surface stability, durability, responsively adaptive lubricity, efficient self-cleaning, anti-protein, anti-bacterial, anti-algae, self-healing (92.85%) properties and 150-day marine field anti-fouling performance during boom seasons, which maintains the satisfactory anti-fouling performance in the harsh marine environment and demonstrates the promising application in neritic sea equipment.
Source: Advanced Functional Materials, February 2024
