Bioadhesives for Wood-based Industries: Problems Related to Water Absorptions and the Potentials

Abstract

Bioadhesives are gaining significant attention as sustainable alternatives to synthetic adhesives in wood-based industries. Despite their environmental benefits, their vulnerability to water absorption limits mechanical strength and durability. This presentation will explore the underlying chemistry contributing to water absorption issues and discuss current innovations aimed at enhancing water resistance. Bioadhesives originate from biological sources, containing hydroxyl groups (-OH) that increase water affinity, causing swelling through mechanisms like capillary action, hydrolysis, diffusion, and osmotic pressure. The extent of water absorption is influenced by polymer structure, additives, and environmental factors such as pH and temperature. Techniques like gravimetric analysis, spectroscopy, and microscopy are used to assess water absorption. Understanding these mechanisms is essential for improving bioadhesive performance, particularly in replacing synthetic resins in wood-based products. This presentation will focus on future advancements in developing durable, eco-friendly bioadhesive systems that can revolutionize the wood industry by aligning with sustainability goals and enhancing economic efficiency, providing valuable insights for researchers, professionals, and policymakers.