Now in a thoroughly updated fifth edition, this classic introductory textbook provides a thorough overview of the area of physical polymer science, emphasizing interrelationships between molecular structure and the morphology and mechanical behavior of polymers. With an increased focus on practical applications in polymer engineering, a strong coverage of modern topics, such as green polymers, biopolymers, light emitting polymers, and electrically conducting polymers, as well as a large number of worked examples and study problems, this edition is an ideal teaching text for graduate students and chemical engineering, materials science, and polymer science professionals.