Solid-liquid phase behavior of binary fatty acid mixtures 1. Oleic acid stearic acid and oleic acid behenic acid mixtures

被引：98

作者：

Inoue, T ^{[1
]}

Hisatsugu, Y ^{[1
]}

Yamamoto, R ^{[1
]}

Suzuki, M ^{[1
]}

机构：

[1] Fukuoka Univ, Fac Sci, Dept Chem, Jonan Ku, Fukuoka 8140180, Japan

来源：

CHEMISTRY AND PHYSICS OF LIPIDS | 2004年 / 127卷 / 02期

关键词：

fatty acids; fatty acid mixture; phase behavior; mixing behavior; phase diagram; DSC; FT-IR;

D O I：

10.1016/j.chemphyslip.2003.09.014

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 [生物化学与分子生物学]; 081704 [应用化学];

摘要：

Solid-liquid phase behavior of binary fatty acid mixtures was investigated by means of differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FT-IR) for the mixture composed of oleic acid (OA) and stearic acid (SA) and that composed of OA and behenic acid (BA). The DSC results provided a monotectic type T-X phase diagram for these mixtures, from which it was suggested that the two fatty acid species are completely immiscible in a solid phase regardless of the two polymorphs of OA, i.e., alpha-form or gamma-form. The solid phase immiscibility was confirmed by the FT-IR observation that the spectra obtained for the mixtures correspond to the superposition of the two spectra for respective components. Thermodynamic analysis of liquidus line demonstrated that OA and SA form an ideal mixture in a liquid phase, whereas the mixing of OA and BA in a liquid phase is slightly non-ideal. (C) 2003 Elsevier Ireland Ltd. All rights reserved.

引用

页码：143 / 152

页数：10

共 24 条

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PHYSICAL-PROPERTIES OF THE FLUID LIPID-BILAYER COMPONENT OF CELL-MEMBRANES - A PERSPECTIVE [J].