TY - GEN A1 - Eckert, Karl-Andreas A1 - Dasgupta, Sunanda A1 - Selge, Benjamin A1 - Ay, Peter T1 - Construction and comparison of solid liquid phase diagrams of binary sat-sat and unsat-unsat fatty acid mixtures comprising two of palmitic/stearic/oleic/linoleic/linolenic acid T2 - Journal of Environmental Research And Development N2 - In this paper, binary phase diagrams of the five main fatty acids present in edible oil based mixtures are shown. While previously the binary systems of one saturated and one unsaturated acid were investigated, in this work the binary mixtures comprise of palmitic (C16:0) and stearic acid (C18:0) or a binary mixture of oleic (C18:1), linoleic (C18:2) or linolenic acid (C18:3). In order to obtain the phase diagrams with all the solid liquid and solid phase transitions, the mixtures were analyzed by means of Differential Scanning Calorimetry (DSC). Phase change boundary functions based on thermodynamic models and experimental values were fitted and compared. The phase diagrams obtained show behaviors in good agreement to literature. The paper contributes to the deeper understanding of the essential phase change effects during industrial crystallization processes. KW - Binary mixtures KW - Solid liquid equilibrium KW - Saturated and unsaturated fatty acids KW - Phase diagram KW - DSC Y1 - 2016 UR - http://www.jerad.org/ppapers/dnload.php?vl=10&is=4&st=612 SN - 0973-6921 SN - 2319-5983 VL - 10 IS - 4 ER - TY - GEN A1 - Eckert, Karl-Andreas A1 - Dasgupta, Sunanda A1 - Selge, Benjamin A1 - Ay, Peter T1 - Novel model for the prediction of SSLE temperatures and crystallization paths of any mixture containing palmitic, stearic, oleic, linoleic and linolenic acid T2 - Thermochimica Acta N2 - A mathematical model for the prediction of phase change temperatures and crystallization paths for mixtures consisting of palmitic (P), stearic (S), oleic (O), linoleic (L) and linolenic acid (Ll) in any distribution is presented in this paper. This model is based on the information gathered from modeled ternary phase diagrams, namely PSO, PSL, PSLl and OLLl, that were based on experimental binary phase diagrams of all possible combinations of these fatty acids. These experimental binary phase diagrams were obtained by means of differential scanning calorimetry and mathematical function fitting, within which the eutectic region of binary palmitic/stearic with oleic/linoleic/linolenic acid was investigated in detail. The basic mathematical model used was previously shown in literature which delivered good results for such systems. The importance of the developed model was then justified by investigations on real and composed synthetic fatty acid mixtures, where a high accuracy of the predicted temperatures could be shown for the technically relevant liquidus and solidus temperatures. A satisfying prediction for thermal events below the first solidus line could be reached as well. This work directly contributes to an enhanced understanding of the thermodynamic and kinetic background of such important mixtures applied in diverse products and industries, thereby showing a large optimization potential for crystallization technologies. KW - Binary mixtures KW - Ternary mixtures KW - Solid liquid equilibrium KW - Saturated and unsaturated fatty acids KW - Phase diagram KW - DSC KW - Modeling Y1 - 2017 U6 - https://doi.org/10.1016/j.tca.2017.03.015 SN - 0040-6031 VL - 652 SP - 126 EP - 140 ER -