©1982 ITJPAC ESR STUDIES OF POLYMERS IN THE BULK PHASE

Abstract — The scope and limitations of the spin—probe and spin—label techniques for studying polymers in the bulk state are reviewed. Methods of calculating correlation times for rotational diffusion of nitroxides from their ESR spectra are described. The significance of the T5OG parameter is discussed with particular reference to spin—probed poiy(vinyl acetate). The spin—label technique is illustrated by reference to polyethylene in the solid and molten states, and in solution