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On the Crystallography and Thermodynamics in Orientationally Disordered Phases in Two-Component Systems

✍ Scribed by J. Salud; D.O. López; M. Barrio; J.Ll. Tamarit; H.A.J. Oonk; P. Negrier; Y. Haget

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
345 KB
Volume
133
Category
Article
ISSN
0022-4596

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✦ Synopsis

The experimental two-component phase diagram between the orientationally disordered crystals 2-amino-2-methyl-1,3-propanediol (AMP) and 1,1,1-tris(hydroxymethyl)propane (PG) has been established from room temperature to the liquid state using thermal analysis and X-ray powder diffraction techniques. The intermolecular interactions in the orientationally disordered mixed crystals of the mentioned system and other related twocomponent systems are discussed by analyzing the evolution of the packing coefficient as a function of the the composition. A thermodynamic analysis of the presented phase diagram and the redetermined AMP/NPG (2,2-dimethyl-1,3-propanediol) is reported on the basis of the enthalpy-entropy compensation theory.

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