Thermal expansion of L-ascorbic acid

The specific volume of vitamin C has been investigated by X-ray powder diffraction as a function of temperature from 110 K up to complete degradation around 440 K. Its thermal expansion is relatively small in comparison with other organic compounds with an expansivity α v of 1.2(3) × 10 −4  K −1 . T...

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Bibliographic Details
Published in:The European physical journal. ST, Special topics Special topics, 2017-04, Vol.226 (5), p.905-912
Main Authors: Nicolaï, B., Barrio, M., Tamarit, J. -Ll, Céolin, R., Rietveld, I. B.
Format: Article
Language:English
Subjects:
Analytical chemistry
Ascorbic acid
Atomic
Bonding strength
Chemical bonds
Chemical Sciences
Classical and Continuum Physics
Condensed Matter Physics
Cristallography
Física
Hydrogen bonds
Material chemistry
Materials Science
Measurement Science and Instrumentation
Molecular
Molecular structure
Optical and Plasma Physics
Organic compounds
Phase Equilibria and Their Applications
Physics
Physics and Astronomy
Regular Article
Specific volume
Thermal expansion
Vitamin C
Vitamina C
X ray powder diffraction
Àrees temàtiques de la UPC
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Summary:The specific volume of vitamin C has been investigated by X-ray powder diffraction as a function of temperature from 110 K up to complete degradation around 440 K. Its thermal expansion is relatively small in comparison with other organic compounds with an expansivity α v of 1.2(3) × 10 −4  K −1 . The structure consists of strongly bound molecules in the ac plane through a dense network of hydrogen bonds. The thermal expansion is anisotropic. Along the b axis, the expansion has most leeway and is about 10 times larger than in the other directions.
ISSN:1951-6355
1951-6401
1951-6401
DOI:10.1140/epjst/e2016-60232-6