Mobility of amorphous polymers such as poly(vinyl chloride) (PVC), ata
ctic polypropylene (PPA) and ethylene-propylene-diene terpolymer (EPDM
) were studied by proton spin-lattice relaxation time (T-1 H), proton
spin-lattice relaxation time in the rotating frame (T-1(H) rho), and d
ipolar dephasing pulse sequence. The data are discussed in terms of mo
bility and by the distribution of configurational sequences.