Tailored Biobased Resins from Acrylated Vegetable Oils for Application in Wood Coatings

Abstract

The modern coating market is dominated by acrylic, polyurethane, and polyester polymer resins produced from unsustainable fossil resources. Herein, we propose the preparation of resins from biobased components to produce functional and solvent-free wood coatings with enhanced performance properties. Acrylated rapeseed, linseed, and grapeseed oils were prepared via a one-step synthesis and used as a basis for the control of resin viscosity and fatty acid content. A combination of vegetable oil acrylates was used as a matrix and the biobased monomer propoxylated glycerol triacrylate (GPT) was selected to tailor the properties of the UV crosslinked network. During polymerization, the GPT monomer induced a two-phase microstructure as indicated by an SEM analysis. The possibility of generating a tailored microstructure in the final material was examined in this study. The addition of GPT increased the storage modulus by up to five-fold, crosslink density by up to two-fold at 20 °C, and glass transition temperature by up to 10.2 °C. Pull-off adhesion tests showed a strength of 1.21 MPa. In addition, the photo-oxidation effect on samples, i.e., aging, was assessed with microhardness, sliding friction, and optical microscopy. Coatings showed a microhardness value up to 250 MPa, while a coefficient of friction (μ) was in the range of 0.21 to 0.88.

Recent Advances in Bio-Based Wood Protective Systems: A Comprehensive Review

“…The novel resin coating was found to enhance the density of the wood material, decrease water absorption, and improve the mechanical properties of the wood's surface [53]. Acrylated vegetable oils have been used for the production of wood coatings, either in combination with propoxylated glycerol triacrylate [54] or together with a photoinitiator for the induction of the curing process [55]. A few years ago, Wang et al exploited castor oil as a starting material to synthesize a multifunctional castor oil-based bio-mercaptan, with the addition of an organic phosphorus flame-retardant [56,57].…”

Feasibility of Carnauba Wax Rejuvenators for Asphalt Concrete with Vacuum Tower Bottom Binder

“…Traditionally, regeneration additives incorporating aromatic-oil-based materials have been employed to address these challenges by reducing viscosity levels and enhancing flexibility, thereby improving elongation properties [23,24]. Nevertheless, the cost implications of such additives have driven researchers in the field of bio-engineering to explore alternative materials, including bio-oils and bio-polymers, to facilitate the regeneration of aged asphalt [18,19].…”