Optimización de la composición química de un pegamento a base a colágeno hidrolizado proveniente de residuos de wet blue de la industria del cuero

Abstract

The tanning industry in Ecuador produces large amounts of solid waste, such as Wet Blue Shavings, which have a negative impact on the environment. Wet Blue contains large amounts of collagen, that can be recovered in its hydrolyzed form to produce functional and environmentally friendly adhesives, contributing to the circular economy. This study focused on optimizing the composition of an adhesive using hydrolyzed collagen obtained from these wastes as raw material. The glue formulations were prepared by integrating hydrolyzed collagen, polyvinyl acetate, acrylic resin, polyvinyl alcohol, and glycerin for three hours using stirrers. Peel strength tests were then performed to test the adhesion and characterization of the glue with the best adhesion. The formulation containing 40 g of hydrolyzed collagen and 16 g of polyvinyl acetate exhibited N per cm. Although this combination showed the higher adhesion, full optimization was not achieved because no concentration of collagen and acetate was found to give even better results. The parameters of the best formulation, such as color, total solids content, viscosity, and thermal stability, are close to the values of commercial glues. The developed glue possesses promising adhesive properties and offers sustainable benefits by using renewable resources and recycling wet blue waste. Although full optimization could not be achieved, these results provide a solid basis for future research and applications in various industry sectors, promoting the development of more environmentally friendly and sustainable adhesives.