wizyta

od 2020-09-20

Title: 1H and 13C NMR studies of molecular dynamics in the biocopolymer of glycolide and epsilon-caprolactone

Source: Solid State Nuclear Magnetic Resonance

Year : 2002

Abstract:

Copolymers of glycolide and F-caprolactone were studied using differential scanning calorimetry and solid-state NMR. The variation of the T-1 relaxation time with temperature reflects local disorder and can be quantified in terms of the distribution of correlation times predicted by the Davidson-Cole model. T-1 relaxation is dominated by trans gauche lisomerisation, with an activation energy of 34-35 kJ mol(-1).
(C) 2002 Elsevier Science (USA).

DOI: 10.1006/snmr.2002.0056   (Pobrane:  2020-10-21)