Sustainable wood coatings made of epoxidized vegetable oils for ultraviolet protection

Environmental policies are becoming more restrictive in preserving ecosystems, encouraging the use of renewable resources such as wood. Wood products need to be protected, notably in outdoor situations, because wood is aging under the effect of climate conditions such as light, water and biodegradation. Surface color modifications occur, accompanied by a decline in physico-mechanical properties. Classical wood coatings are progressively prohibited due to their environmental toxicity, thus calling for safer coatings. Here we review wood photodegradation and protective coatings made of vegetable oils and epoxy resins. Epoxy resins allow high crosslinking and solve the common incompatibility of wood surface and coatings.