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[The CIVIS Newsroom ](https://civis.eu/de/the-civis-newsroom) 2. SU researchers revolutionise construction by turning tree bark into high-performance coating SU researchers revolutionise construction by turning tree bark into high-performance coating ============================================================================================== CIVIS Highlights 21\. November 2024 Researchers at Stockholm University have unveiled a fully bio-based wood coating system that could transform the construction industry by providing a sustainable alternative to fossil-based synthetic coatings. Inspired by the protective functions of tree bark, this innovative solution utilises components sourced from birch and spruce bark. ![](/storage/files/image_5.jpg)Researchers demonstrating the water resistance of the wood. Photo © Matilda Andersson/SUThe research, published in the journal Materials Horizons, aligns with Europe's commitment to improving resource efficiency in the bio-based sector. The new coating combines suberinic acids from birch bark and polyphenols from spruce bark, forming a waterborne suspension that is both safe and easy to apply to wood surfaces. > *Polyphenols play a dual role in stabilising water-insoluble suberinic acids while also acting as nanofillers to enhance the coating’s mechanical properties. When applied to spruce wood panels, the bio-based coating exhibited impressive water resistance, outperforming conventional synthetic coatings even after prolonged water exposure",* explains Fengyang Wang, the publication´s first author. Mika Sipponen, the project supervisor, highlights that tree bark, often burned for energy, can instead be a valuable resource for wood protection. This innovation addresses a crucial need in the construction sector, where traditional wood coatings frequently contain hazardous compounds and rely on fossil-derived chemicals. The new coating provides an eco-friendly alternative without sacrificing performance. > *Our approach not only reduces the carbon footprint of construction materials but also creates a circular, sustainable solution in wood processing,"* Sipponen explains. Collaboration for a greener future ----------------------------------- Although the materials' chemistry was developed at Stockholm University, the research team collaborated across the entire value chain – from bark supply to processing and performance testing. *"While the bark is locally available in large quantities, it’s crucial to work with various experts", emphasises researcher* Ievgen Pylypchuk. The breakthrough supports the growing demand for renewable and sustainable materials in modern building practices, positioning wood as a more environmentally responsible construction material, reducing the environmental impact of protective coatings. ### Latest Highlights: [*WWF recognizes UNIL’s achievements towards sustainability* ](https://civis.eu/en/get-informed/news/wwf-recognizes-unil-s-achievements-towards-sustainability) [*World-renowned ethologist and activist Dr. Jane Goodall gives inspiring lecture at PLUS*](https://civis.eu/en/get-informed/news/dr-jane-goodall-inspires-at-the-plus) [*University of Bucharest Tops Rankings for Highest-Paid Graduates in Romania*](https://civis.eu/en/get-informed/news/university-of-bucharest-tops-rankings-for-highest-paid-graduates-in-romania) [*25 refugee students from Ukraine succeed 8-month training at UAM*](https://civis.eu/en/get-informed/news/25-refugee-students-ukraine-succeed-8-month-training-uam) [*New paintings and significant details uncovered in the Egyptian temple of Esna*](https://civis.eu/en/get-informed/news/new-paintings-and-details-uncovered-in-the-egyptian-temple-of-esna) Related news ------------ - [ ![](https://civis.eu/storage/files/dogs-su-800x600.jpg?token=d436788be1d8bedcdebade845bd52ff0)World’s oldest genetic evidence for domestic dogs identified CIVIS Highlights 6. 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