ViBRANt - Bark-derived bio-adhesives for engineered wood panels
Project team: Ulrika Rova (project leader), Paul Christakopoulos, Leonidas Matsakas
Partners: University of Borås; NEFAB; Sveaskog; Swerea SICOMP
Duration: 2018
Funded by BioInnovation/VINNOVA
Significant volumes of bark represent a potentially abundant resource within the forest industry. Although currently utilized primarily as fuel, spruce and pine bark contains valuable extractives, such as tannins. Tannins, classified as polyphenolic compounds, possess the potential to substitute fossil-based phenol in various applications, including insulating foams and adhesives. Taking into account the large quantities available, there is a great potential to exploit a hitherto untapped resource.
Biobased polymers offer diverse applications and align with the growing consumer demand for natural and environmentally friendly products. Continued research is essential to maximize desired properties, optimize material utilization, and refine processing methods to reduce costs and meet regulatory standards. Extracts derived from bark, particularly those with high tannin content and reactivity, are envisioned as valuable starting materials for formulating various adhesive systems. The primary objective of this pre-study is the development of formaldehyde-free, water-resistant adhesives for plywood production, utilizing domestic tannin extracts. Additionally, the project aims to innovate by formulating adhesives based on domestic tannins/lignin, combined with cellulose nanofibrils as fillers. By involving key stakeholders across the value chain, this project endeavours to explore the utilization of bark as a sustainable and valuable feedstock, contributing to the strengthening of the Swedish bioeconomy.
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