Provides an authoritative resource on paper-based functional materials for advanced research, engineering innovation, and industrial application The rapid advancement of paper-based functional materials marks a transformative moment in modern materials science. Once primarily associated with writing, printing, and packaging, paper has evolved into a versatile, multifunctional platform that integrates advances from chemistry, biology, engineering, and nanotechnology. With properties such as high mechanical strength, superior conductivity, flame resistance, and biocompatibility, paper-based functional materials are gaining recognition for their applications in flexible electronics, food preservation, biomedical devices, sensors, and energy storage systems. Paper-Based Functional Materials: Preparation and Applications provides an in-depth and systematic examination of the foundations, preparation methods, and application prospects of this emerging class of materials. Designed to progress from basic principles to applied technologies, the book covers high-performance starch-based papers, nanocellulose composites, hydrophobic and oleophobic papers, thermal insulating and flame-retardant structures, as well as advanced functional papers for detection and separation. Combining traditional papermaking expertise with cutting-edge functionalization strategies, contributors with direct experience in applied papermaking research and technology highlight the role of cellulose-based materials in meeting global sustainability goals and in substituting petroleum-based plastics. Uniting theory, methodology, and practice in a single, comprehensive volume, Paper-Based Functional Materials: Preparation and Applications: Explores cross-disciplinary advances integrating chemistry, biology, and engineering in paper-based functional materials Details synthesis and characterization methods for high-performance starch, nanocellulose, and fiber-based papers Highlights applications in flexible electronics, energy storage, environmental remediation, and biomedical engineering Examines specialized functions such as hydrophilicity, oleophobicity, conductivity, flame retardancy, and filtration Outlines prospects for replacing plastics with cellulose-based solutions aligned with sustainability initiatives Features extensive case studies from commercial engineering and industrial practice Paper-Based Functional Materials: Preparation and Applications is an essential reference for graduate-level courses in materials science, polymer chemistry, chemical engineering, and sustainable design, and can be adopted as a recommended text in advanced engineering curricula. It is equally valuable for researchers, R&D engineers, and industry professionals working in papermaking, biobased materials, and functional product development.