Study of crystallization process of polymer from melt by a real-time pulsed NMR measurement

Abstract

Crystallization process of polymer [poly(ε-caprolactone)] has been studied by a real-time pulsed NMR measurement. The temporal change of both the spin–spin relaxation time T2 and the spin-lattice relaxation time in the rotating frame T1ρ were obtained. The growth behavior of crystalline lamellae and interface has been detected successfully by T2 measurement. It becomes clear that the real-time pulsed NMR measurement is a very powerful tool for studying crystallization dynamics. The crystallization dynamics of polymers has been discussed based on the results.