Molecular Mobility of Sucrose in Aqueous Solution Studied by 13C NMR Relaxation
- 1 June 1993
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung C
- Vol. 48 (5-6) , 407-413
- https://doi.org/10.1515/znc-1993-5-601
Abstract
From the temperature and concentration dependence of the 13C spin lattice relaxation times of the 12 carbon atoms of the sucrose molecule the rotational dynamics of the sugar molecules are determined. No indication for conformational mobility of the rings is found. The exocyclic hydroxymethyl groups possess extra mobility. The models used for the description are critically discussed. The temperature dependence of the rotational mobility is described by a VTF equation. The concentration dependence of the ideal glass transition temperature To for this mobility is derived.Keywords
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