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1H and 13C NMR Studies of Molecular Dynamics in the Biocopolymer of Glycolide and ε-Caprolactone

✍ Scribed by Farhod Nozirov; Eugeniusz Szczesniak; Zbigniew Fojud; Piotr Dobrzynski; Jacek Klinowski; Stefan Jurga

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
189 KB
Volume
22
Category
Article
ISSN
0926-2040

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✦ Synopsis

Copolymers of glycolide and epsilon-caprolactone were studied using differential scanning calorimetry and solid-state NMR. The variation of the T1 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, relaxation is dominated by trans-gauche isomerisation, with an activation energy of 34-35 kJ mol(-1).

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