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Kalorimetrischer und elektronenmikroskopischer Nachweis von Entmischungserscheinungen im pseudobinären System Dipalmitoyllecithin/ Dipalmitoyl-N-methyl-kephalin

  • Colloid Science
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Zusammenfassung

Kalorimetrische Messungen am pseudobinären System Dipalmitoyllecithin/Dipalmitoyl-N-methyl-kephalin im wasserreichen Konzentrationsgebiet (50 Gew. % Wasser) ergaben vollständige Mischbarkeit in derL α-Phase (Hochtemperaturphase) und partielle Entmischung (x MPE≅0.05–0,35) in den Tieftemperaturphasen. Die Mischungsbzw. Entmischungsgebiete in den Tieftemperaturphasen konnten durch die Rippenstruktur derP β-Phase elektronenmikroskopisch nachgewiesen werden.

Abstract

By means of differential scanning calorimetry and electron microscopy the miscibility properties of the system dipalmitoyllecithin/dipalmitoyl-N-methyl-cephaline/ water (50 wt-% water) was studied. In theL α-phase (high temperature phase) both phospholipids were completely miscible. On the other hand in the low temperature phases demixing occurs in the concentration range fromx MPE≅0.05 tox MPE≅0.35. The electron microscopy confirms these results. The electron microscopic pictures showed the ripple structure of theP β phase.

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Author notes

  1. G. Brezesinski & H. -D. Dörfler

    Present address: Sektion Chemie, Martin-Luther-Universität Halle-Wittenberg, Deutschland

  2. H. W. Meyer

    Present address: Abteilung für Elektronenmikroskopie des Bereiches Medizin, Friedrich-Schiller-Universität Jena, DDR

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    1. G. Brezesinski
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    2. H. W. Meyer
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    3. H. -D. Dörfler
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    Brezesinski, G., Meyer, H.W. & Dörfler, H.D. Kalorimetrischer und elektronenmikroskopischer Nachweis von Entmischungserscheinungen im pseudobinären System Dipalmitoyllecithin/ Dipalmitoyl-N-methyl-kephalin. Colloid & Polymer Sci 261, 1050–1053 (1983). https://doi.org/10.1007/BF01421714

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    • DOI: https://doi.org/10.1007/BF01421714

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