Cellulose in 3D and 4D Printing: Additive Manufacturing for Sustainable Processing and Applications addresses the growing need for sustainable materials in the manufacturing industry. The book covers the integration of cellulose into 3D and 4D printing technologies, providing properties, processing methods, and potential applications, and bridging the gap between material science and advanced manufacturing. The book starts with a section covering the fundamentals of using cellulose in additive manufacturing, with chapters discussing cellulose extraction and purification methods, the mechanical and rheological behaviors of cellulose, and the use of recycled cellulose in 3D and 4D printing. Following sections cover processing and printing technologies, including the processing of cellulose-based filaments and resins, as well as the use of multi-material cellulose and hybrid cellulose in additive manufacturing. Design optimization, simulation, and modeling of 3D and 4D printing with cellulose is also outlined, as are applications in aerospace, biomedicine, electronics, and food science. Case studies and a brief section on commercialization, scale-up strategies, environmental impacts, and more round out the content.