This analysis evaluates a copolymer-based adhesive's mechanical and thermal performance, highlighting adhesive quality in wet and dry conditions.
The purpose of this investigation is to demonstrate an effective replacement copolymer composition with improved mechanical and thermal properties. This composition is made up of acrylic-vinyl polymer grafted onto capped polyurethane. Here, polyurethane capped polyvinyl alcohol (PVA) stabilised polyvinyl acetate-vinyl neodecanoate-methyl methacrylate (Poly (VAc-VeoVa10-MMA-capped PU)) were synthesised using emulsion polymerization technique. Copolymerization and glass transition temperatures (Tg) of film were characterised using Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). The results indicated significant increases in the Tg and viscosity in adhesives based on Poly (VAc-VeoVa10-MMA-capped PU) copolymer. For evaluating the adhesive performance, tensile strength of bonded wood specimen was analysed under wet and dry environments, following EN 204 and EN 205 standard. Tensile strength was found to be enhanced by approximately ∼34% in a dry environment after 24 h of bonding and by approximately ∼31% in a wet environment (per EN 204) with Poly (VAc-VeoVa10-MMA-capped PU) copolymers adhesives, as compared to copolymer sample without capped PU as a co-monomer which was also in line with contact angle test. The Poly (VAc-VeoVa10-MMA-capped PU) adhesive has a good combination of tensile strength and heat resistance, and it is highly resistant to both boiling and cold water.
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Ravindra V. Gadhave (2025) studied this question.
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