The third edition of a best-selling textbook, Introduction to Polymers includes new chapters on polymer composites and functional polymers for electrical, optical, photonic, and biomedical applications. It features a new section on controlled radical polymerizations such as nitroxide, ATRP, RAFT/MADDIX, and CCT and expands material on NMR spectroscopy and Raman spectroscopy. The book offers additional information on statistical theory and measurement of repeat unit sequence distributions. With updated questions, problems, solutions manual, and suggestions for further reading, this text remains an essential textbook and valuable resource for undergraduate students in polymer chemistry and material science.