Researchers Created Degradable Marine Coating
A new material called AxHy reduces harmful biocide leaching into marine environments by 95 percent.
Updated on Oct. 9, 2026 in Chemistry
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In 2026, researchers introduced AxHy, a crosslinked marine antifouling coating that degrades through hydrolytic cleavage of ester bonds. This innovative surface material integrates passive defense, active biocide release, and controlled degradation to protect against marine growth.
Why it matters
Conventional marine coatings often suffer from uncontrolled leaching, which creates significant environmental hazards. This new development addresses those concerns by limiting the chemical footprint of antifouling agents in aquatic ecosystems.
The coating is synthesized by crosslinking hyperbranched polycaprolactone with an isothiazolinone-functionalised amphiphilic polymer. Its degradation rate is adjustable by varying the degree of branching in the polycaprolactone component.
The details
The AxHy coating demonstrates effective resistance against biological threats like Phaeodactylum tricornutum and Chlorella sp. By utilizing hydrolytic cleavage of ester bonds, the material ensures that active agents are released only as needed, rather than leaching continuously.
Timeline
The research was published in Progress in Organic Coatings in 2026.
The Big Picture
This development represents a significant step in the broader shift toward sustainable maritime antifouling technologies. It challenges legacy reliance on physically doped coatings that release chemicals indiscriminately into the ocean.
The transition to controlled-release coatings could eventually lead to cleaner coastal waters and reduced maintenance costs for shipping and boating industries. If commercialized, this technology could set a new standard for environmentally compliant hull protection.
The takeaway
Advancements in polymer science are enabling the creation of materials that protect surfaces while actively minimizing chemical pollution. Future applications of this technology could provide a blueprint for safer, more efficient alternatives to current marine protection methods.
Further reading
For more on the latest developments in materials science, visit the Chemistry section.
Source note: This article includes information reported by European Coatings.
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