This book serves as both an introduction and a practical guide on the synthesis and use of polyphosphazenes, a new and very versatile polymer family which has recently demonstrated bioactivity, biocompatibility, and biodegradability. These polymers find uses as potent vaccine adjuvants and microencapsulating agents; biodegradable materials and scaffolds for tissue engineering; biocompatible coatings and carriers for gene delivery, for example. A broad spectrum of application specialists working in chemistry, life scientists, and chemical engineering will appreciate this single-source reference.