Thermodynamic and Kinetic Study on Phase Behavior of Binary Mixtures of POP and PPO Forming Molecular Compound Systems

DOI Web Site 被引用文献7件
  • A. Minato
    Faculty of Applied Biological Science, Hiroshima University, Higashi-Hiroshima 739, Japan
  • S. Ueno
    Faculty of Applied Biological Science, Hiroshima University, Higashi-Hiroshima 739, Japan
  • K. Smith
    Colworth Laboratory, Unilever Research, Bedford, U.K.
  • Y. Amemiya
    Faculty of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
  • K. Sato
    Faculty of Applied Biological Science, Hiroshima University, Higashi-Hiroshima 739, Japan

書誌事項

公開日
1997-05-01
DOI
  • 10.1021/jp962956v
公開者
American Chemical Society (ACS)

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説明

The phase behavior of PPO (sn-1,2-dipalmitoyl-sn-3-oleoylglycerol) and POP (sn-1,3-dipalmitoyl-sn-2-oleoylglycerol) binary mixture was examined using differential scanning calorimetry, conventional and synchrotron radiation X-ray diffraction (XRD), and highly pure samples. A molecular compound, βC, was formed at the 1:1 concentration ratio of PPO and POP, giving rise to two monotectic phases of PPO/compound and compound/POP in a juxtapositional way. βC has a long spacing value of 4.1 nm of double chain length structure. In the PPO/compound region, the DSC melting peak increased with increasing PPO concentration, whereas the DSC melting peak increased with increasing POP concentration in the compound/POP region. The melting point of βC was lowest at 31.2 °C. Time-resolved XRD study unveiled the formation of molecular compounds in metastable forms, αC and β‘C, having the same PPO/POP concentration ratio as βC. αC and β‘C exhibited monotectic phases with corresponding metastable forms of the pure components....

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