This book introduces in detail the development history, synthesis methods, physicochemical propertiesand the main application in agriculture, hygiene, construction, environmental management, bioscience and more, based on the multiple properties including absorption, flexibility, elasticity, sensitivity, etc. Edited by experts in the area, the book also highlights the biodegradability, commercial viability and market potential of SAPs, SAP composites, the feasibility of using biomass as raw materials for SAP production. This well-rounded consideration of the topic makes this book suitable for a range of academic professionals and industry professionals working in polymer science, material science and environmental science.