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

被引：3

作者：

Migliardo, F

Branca, C

Faraone, A

Magazù, S

Migliardo, P

机构：

[1] Univ Messina, Dipartimento Fis, I-98166 Messina, Italy

[2] Univ Messina, INFM, I-98166 Messina, Italy

来源：

PHYSICA B | 2001年 / 301卷 / 1-2期

关键词：

neutron scattering; vitamin C; relaxational and vibrational properties;

D O I：

10.1016/S0921-4526(01)00526-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this paper, we report quasi elastic neutron scattering (QENS) spectra of vitamin C aqueous solutions, obtained using MIBEMOL spectrometer (LLB). The main purpose of this work is to characterize the relaxational and vibrational properties of the Vitamin C/H2O system below and above the glass transition 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 peculiar hydrogen-bond system. (C). 2001 Elsevier Science B.V, All rights reserved.

引用

页码：138 / 140

页数：3