This thoroughly revised and updated third edition is written by seven well-known authorities in the polymer science community. Each author contributes a chapter which reflects his own interests and expertise in the physical states and associated properties of polymers. Second Edition published by the American Chemical Society Hb (1993): 0-841-22505-2Pt. I. Physical states of polymers -- 1. The rubber elastic state / James E. Mark -- 2. The glass transition and the glassy state / Kia L. Ngai -- 3. Viscoelasticity and flow in polymeric liquids / William W. Graessley -- 4. The crystalline state / Leo Mandelkern -- 5. The mesomorphic state / Edward T. Samulski -- Pt. II. Some characterization techniques -- 6. The application of molecular spectroscopy to characterization of polymers / Jack L. Koenig -- 7. Small-angle-neutron-scattering characterization of polymers / George D. Wignall