Synthesis of lignin-based phenol-formaldehyde adhesive - A sustainable alternative to petrochemical

This study is to investigate the capability of producing lignin-based phenol-formaldehyde adhesive (LBPFA) with lignin derived from coir pith collected in Mekong Delta, Viet Nam. The LBPFA synthetic process underwent non chemical modifications minimize petrochemicals and energy. Effective factors as reaction time, temperature various contents phenol substitution were examined. Physical, thermal properties containing formaldehyde content, viscosity, solid Fourier transformed infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), tensile strength, modulus strain conducted. was successfully synthesized at levels substituting for phenol. LBPFA’s parameters accordance GB/T14372-2006 standard. optimum replacement content synthesis identified 180 minutes, 900C 40% wt/wt, respectively. showed highest dry wet strengths 14.42 MPa 7.66 on wooden boards compared corresponding figures commercial resin 2.98 0 MPa, For plywood, bending strength shown 15.97 20.16