Book excerpt: The Handbook of Natural Polymers: Sources, Synthesis, and Characterization is a comprehensive resource covering extraction and processing methods for polymers from natural sources, with an emphasis on the latest advances. The book begins by introducing the current state-of-the-art, challenges, and opportunities in natural polymers. This is followed by detailed coverage of extraction, synthesis, and characterization methods, organized by polymer type. Along with broad chapters discussing approaches to polysaccharide-based polymers, dedicated chapters offer in-depth information on nanocellulose, chitin and chitosan, gluten, alginate, natural rubber, gelatin, pectin, lignin, keratin, gutta percha, shellac, silk, wood, casein, albumin, collagen, hemicellulose, polyhydroxyalkanoates, zein, soya protein, and gum. The final chapters explore other key themes, including filler interactions and properties in natural polymer-based composites, biocompatibility and cytotoxicity, biodegradability, life cycle, and recycling. Throughout the book, information is supported by data, and guidance is offered regarding potential scale-up and industry factors. As part of a 3-volume handbook offering comprehensive coverage of natural polymers, this book will be of interest to all those looking to gain a broad knowledge of natural polymers, including academic researchers, scientists, advanced students, engineers, and R&D professionals from a range of disciplines and industries. - Provides systematic coverage of the latest methods for the extraction, synthesis, and characterization of natural polymers. - Includes an extensive range of natural polymer sources, including established biopolymers and emerging materials. - Explores preparation of natural polymers and their composites, blends, IPNs, gels, and nanoparticles.