This book serves as a definitive resource, encompassing the entire lifecycle of hydrogels—from their chemistry and synthesis to diverse applications and future potential. Each chapter delves deeply into key aspects of hydrogel research and technology, exploring the evolution and modern significance of functional hydrogels, foundational materials, methods of preparation, and innovations such as stimuli-responsive and hybrid hydrogels. The book examines advanced functionalities like self-healing and shape memory, showcasing the versatility of hydrogels in fields such as biomedicine, robotics, environmental solutions, agriculture, and food packaging. It also provides insights into technical evaluation, biocompatibility, regulatory standards, and eco-friendly advancements, while envisioning novel applications and sustainable practices in hydrogel design. Combining comprehensive scientific details with practical applications and forward-looking perspectives, this book is an invaluable reference for academics, researchers, industry professionals, and anyone interested in the transformative power of hydrogels.

Fu Guodong is Professor in the School of Chemistry and Chemical Engineering at Southeast University, China. His work focuses on smart functional materials, especially hydrogels, for advancements in soft matter actuators and sustainable innovations.

Mulenga Kalulu is a Special Research Fellow of School of Natural Sciences, Department of Chemistry, University of Zambia. Currently, he is pursuing a Ph.D. at Southeast University under Prof. Fu Guodong. His research focuses on smart hydrogels, actuators, sensors, conductive nanomaterials, and polymer synthesis.