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1、Thermochimica Acta 496 (2009) 30–37Contents lists available at ScienceDirectThermochimica Actajournal homepage: www.elsevier.com/locate/tcaThe solid–liquid phase diagrams of binary mixtures of even saturated fatty acidsdiffering by six carbon atomsMariana C. Costa a,c,d
2、, Marlus P. Rolemberg b, Antonio J.A. Meirelles c,João A.P. Coutinho d, M.A. Krähenbühl a,∗aLPT, Department of Chemical Process, School of Chemical Engineering, University of Campinas, UNICAMP, P.O. Box 6066, 13083-970, Campinas-SP, BrazilbDETQI, Department of Chemica
3、l Technology, Federal University of Maranhão (UFMA), São Luís, Maranhão, BrazilcEXTRAE, Department of Food Engineering, Faculty of Food Engineering, University of Campinas, UNICAMP, P.O. Box 6121, 13083-862, Campinas-SP, BrazildCICECO, Departamento de Química da Unive
4、rsidade de Aveiro, 3810-193 Aveiro, Portugala r t i c l ei n f oa b s t r a c tArticle history:This study was aimed at using the solid–liquid phase diagrams for three binary mixtures of saturated fattyReceived 2 February 2009acids, especially the phase transitions b
5、elow the liquidus line. These mixtures are compounded by caprylicReceived in revised form 10 June 2009Accepted 17 June 2009Available online 25 June 2009acid (C8:0) + myristic acid (C14:0), capric acid (C10:0) + palmitic acid (C16:0), lauric acid (C12:0) + stearic acid(
6、C18:0), differing by six carbon atoms between carbon chains. The phase diagrams were obtained bydifferential scanning calorimetry (DSC). The polarized light microscopy was used to complement theKeywords:Solid–liquid equilibriumSaturated fatty acidsPhase diagramcharacte
7、rization for a full grasp of the phase diagram. Not only do these phase diagrams present peritec-tic and eutectic reactions, but also metatectic reactions, due to solid–solid phase transitions common, infatty acids. These findings have contributed to the elucidation of t
8、he phase behavior of these importantbiochemical molecules with implications in various industrial production.D