Bio-based Wood Adhesives
Preparation, Characterization, and Testing
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Adhesive bonding plays an increasing role in the forest product industry and is a key factor for efficiently utilizing timber and other lignocellulosic resources. As synthetic wood adhesives are mostly derived from depleting petrochemical resources and have caused increasing environmental concern, natural product and byproduct-derived adhesives have attracted much attention in the last decades. Although adhesives made from plant and animal sources have been in existence since ancient times, increased knowledge of their chemistry and improved technical formulation of their preparation are still needed to promote their broader industrial applications. The primary goals of this book are to (1) synthesize the fundamental knowledge and latest research on bio-based adhesives from a remarkable range of natural products and byproducts, (2) identify need areas and provide directions of future bio-based adhesive research, and (3) help integrating research findings in practical adhesive application for maximal benefits. This book covers information on a variety of natural products and byproducts and the latest research on formulation, testing and improvement of the relevant adhesives in fifteen chapters written by an international group of accomplished contributors. This book will serve as a valuable reference source for university faculty, graduate students, research scientists, agricultural and wood engineers, international organization advocators and government agency regulators who work and deal with enhanced utilization of agricultural and forest products and byproducts.
Table of Contents
Preface. About the editor. Protein-based Wood Adhesives: Current Trends of Preparation and Application. Adhesion properties of soy protein subunits and protein adhesive modification. Modification of soy-based adhesives to enhance the bonding performance. Canola protein and oil-based wood adhesives. Wood adhesives containing proteins and carbohydrates. Preparation and utilization of water washed cottonseed meal as wood adhesives. Comparative evaluation of rice bran- and corn starch-modified urea formaldehyde adhesives on improvements of environmental performance of agro-based composites. Tannins for wood adhesives, foams and composites. Utilization of citric acid in wood bonding. Synthesis of polymers from liquefied biomass and their utilization in wood bonding. Preparation, properties, and bonding utilization of pyrolysis bio-oil. Application of the rosin from White Pitch (Protium heptaphyllum) for use as wood adhesive. Effects of rheology and viscosity of biobased adhesives on bonding performance. Effects of nano-materials on different properties of wood-composite materials. Bio-based wood adhesives research: advances and outlooks. Index.