Researchers investigated kraft lignin¡¯s potential in waterborne antifouling coatings. While laboratory tests showed promise, field trials presented challenges.

Lignin-based waterborne coatings in practice ¨C advancing sustainability in antifouling technologies. Image source: blabla5 - Pixabay (symbol image).

Kraft lignin, a byproduct of the paper industry, was tested for antifouling properties in marine coatings. The study aimed to create a sustainable alternative to traditional methods by formulating coatings with high lignin content, maximizing interaction with marine organisms. To reduce volatile organic compounds (VOC), all formulations were waterborne.

However, field tests at the CoaST Maritime Test Center revealed limited effectiveness in preventing fouling. Additionally, increased lignin content negatively impacted the coatings¡¯ mechanical properties.

Future Research Opportunities

Despite these limitations, the study provides a foundation for further exploration. The combination of bio-based materials and waterborne systems holds potential for developing environmentally friendly antifouling coatings in the future.

Source: Journal of Coatings Technology and Research, Volume 21, Pages 993¨C1003, (2024).