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Thermal expansion of L-ascorbic acid
Nicolaï, Béatrice; Barrio Casado, María del; Tamarit Mur, José Luis; Céolin, René; Rietveld, Ivo B.
Universitat Politècnica de Catalunya. Departament de Física; Universitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials
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 av 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.
Àrees temàtiques de la UPC::Física
Vitamin C
Vitamina C
info:eu-repo/semantics/submittedVersion
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