Study of L-ascorbic acid (vitamin C)/H2O mixture across glass transition

Authors
Migliardo, F Branca, C Faraone, A Magazu, S Migliardo, P
Citation
F. Migliardo et al., Study of L-ascorbic acid (vitamin C)/H2O mixture across glass transition, PHYSICA B, 301(1-2), 2001, pp. 138-140
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
301
Issue
1-2
Year of publication
2001
Pages
138 - 140
Database
ISI
SICI code
0921-4526(200107)301:1-2<138:SOLA(C>2.0.ZU;2-C
Abstract
In this paper, we report quasi elastic neutron scattering (QENS) spectra of vitamin C aqueous solutions, obtained using MIBEMOL spectrometer (LLB). Th e main purpose of this work is to characterize the relaxational and vibrati onal properties of the Vitamin C/H2O system below and above the glass trans ition temperature by analysing the low-frequency neutron scattering spectra . The determination of the relative weight of vibrational over relaxational contributions allows to get information on the fragility degree of this pe culiar hydrogen-bond system. (C). 2001 Elsevier Science B.V, All rights res erved.