<p>To enhance the moisture resistance of wood adhesives, this work aims to add a branched co-monomer, such as tert-butyl acrylate, to polyvinyl acetate (PVAc) emulsion adhesive. This research focuses the development and testing of emulsion co-polymers containing vinyl acetate (VAc), vinyl neodecanoate (VeoVa), N-methylol acrylamide (NMA), and tert-butyl acrylate (Poly (VAc-VeoVa10-TBA-NMA)) as wood adhesives. Preservatives, plasticizer, polyvinyl alcohol (PVA) solution, and aluminum chloride solution are added to develop the emulsion-based adhesive samples. The VAc, VeoVa, methyl methacrylate (MMA) and NMA (Poly (VAc-VeoVa-MMA-NMA)) adhesive are then compared with the poly (VAc-VeoVa-TBA-NMA)-based adhesive sample. The EN 204–205 standard was followed in testing the tensile strength of bonded wood specimens in both wet and dry circumstances to evaluate the adhesives’ performance. When compared to a co-polymer-based adhesive based on MMA, EN 204 demonstrates that after 6&#xa0;h of bonding, the tensile shear strength of a TBA-based adhesive increased by 25.31% in a dry environment and by 31.58% in a wet environment. The established approach provides a simple and useful way to produce adhesives with better water resistance and bonding strength by using TBA as a branching co-monomer.</p>

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Tert-butyl acrylate (TBA) co-monomer-based water-resistant wood adhesive: synthesis and characterizations

  • Ravindra Gadhave

摘要

To enhance the moisture resistance of wood adhesives, this work aims to add a branched co-monomer, such as tert-butyl acrylate, to polyvinyl acetate (PVAc) emulsion adhesive. This research focuses the development and testing of emulsion co-polymers containing vinyl acetate (VAc), vinyl neodecanoate (VeoVa), N-methylol acrylamide (NMA), and tert-butyl acrylate (Poly (VAc-VeoVa10-TBA-NMA)) as wood adhesives. Preservatives, plasticizer, polyvinyl alcohol (PVA) solution, and aluminum chloride solution are added to develop the emulsion-based adhesive samples. The VAc, VeoVa, methyl methacrylate (MMA) and NMA (Poly (VAc-VeoVa-MMA-NMA)) adhesive are then compared with the poly (VAc-VeoVa-TBA-NMA)-based adhesive sample. The EN 204–205 standard was followed in testing the tensile strength of bonded wood specimens in both wet and dry circumstances to evaluate the adhesives’ performance. When compared to a co-polymer-based adhesive based on MMA, EN 204 demonstrates that after 6 h of bonding, the tensile shear strength of a TBA-based adhesive increased by 25.31% in a dry environment and by 31.58% in a wet environment. The established approach provides a simple and useful way to produce adhesives with better water resistance and bonding strength by using TBA as a branching co-monomer.