This book covers the fundamentals, theory, design, fabrication, characterization, and application of self-healing polymers and polymer composites. In addition to a careful review of the state of the art, the book describes how to prepare self-healing polymeric materials, how to increase the speed of crack repair, high temperature applications, and how to broaden the spectrum of healing agent species. Innovative routes that correlate materials chemistry to the self-healing functionality are summarized for future industrial use. Throughout the book, the authors emphasize integration of existing techniques and / or novel synthetic approaches for target-oriented materials design and fabrication. With this book, experienced readers will gain a comprehensive view of the emerging field, while new researchers will understand the framework for creating new materials or new applications.