This volume emphasizes the importance of first understanding cryogenic properties in order to comprehend the room temperature properties of polymers. The author describes the necessary modifications for polymers and their applications to the most important thermal, mechanical, and dielectric properties. Other chapters discuss the correlation between polymer structures and properties, the phon structure of polymers, separation of components influenced by glass transitions and 'basic properties' related to solid state physics, and the influence of tunneling processes on properties at very low temperatures. Polymer Properties at Room and Cryogenic Temperatures also features an extensive appendix with key data on all the properties considered in the text. This volume is an important and useful text for students, scientists, lecturers, and engineers in the area of polymer science.