The solid-liquid phase diagrams of binary mixtures of consecutive, even saturated fatty acids: differing by four carbon atoms
authors Costa, MC; Sardo, M; Rolemberg, MP; Ribeiro-Claro, P; Meirelles, AJA; Coutinho, JAP; Krahenbuhl, MA
nationality International
journal CHEMISTRY AND PHYSICS OF LIPIDS
author keywords Solid-liquid equilibrium; Saturated fatty acids; Phase diagram; DSC; XRD; FT-Raman
keywords LAURIC-ACID; OLEIC-ACID; STEARIC-ACID; CRYSTAL-STRUCTURE; CAPRIC ACID; BEHAVIOR; FORM; SYSTEMS; POLYMORPHISM; EQUILIBRIA
abstract The complete solid-liquid phase diagrams for four binary mixtures of saturated fatty acids are presented, for the first time, in this work. These mixtures are formed by caprylic acid (C(8:0)) + lauric acid (C(12:0)). capric acid (C(10:0)) + myristic acid (C(14:0)), lauric acid (C(12:0)) + palmitic acid (C(16:0)) and myristic acid (C(14:0)) + stearic acid (C(18:0)). The phase diagrams were obtained by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). FT-Raman spectrometry and polarized light microscopy were used to complement the characterization for a complete understanding of the phase diagram. All of the phase diagrams here reported show the same global behavior that is far more complex than previously accepted. They present not only peritectic and eutectic reactions, but also metatectic reactions, clue to solid-solid phase transitions common in fatty acids, and regions of solid solution not previously reported. This work contributes to the elucidation of the phase behavior of these important biochemical molecules with implications in various industrial applications. (c) 2008 Elsevier Ireland Ltd. All rights reserved.
publisher ELSEVIER IRELAND LTD
issn 0009-3084
year published 2009
volume 157
issue 1
beginning page 40
ending page 50
digital object identifier (doi) 10.1016/j.chemphyslip.2008.09.006
web of science category Biochemistry & Molecular Biology; Biophysics
subject category Biochemistry & Molecular Biology; Biophysics
unique article identifier WOS:000262559000004
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 2.094
5 year journal impact factor 2.791
category normalized journal impact factor percentile 32.582
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg