Structural Transition in a Lipid−Water Liquid System


  • L.A. Bulavin Taras Shevchenko National University of Kyiv
  • D.V. Solov’ev Taras Shevchenko National University of Kyiv
  • Yu.E. Gorshkova Joint Institute for Nuclear Research
  • O.M. Zhigunov Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic
  • O.I. Ivan’kov Taras Shevchenko National University of Kyiv
  • V.I. Gordelii Joint Institute for Nuclear Research
  • O.I. Kuklin Joint Institute for Nuclear Research





Small-angle X-ray scattering technique has been used to study multilayer lipid membranes of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and the
3:1-mixture DPPC/1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) in excess water. The temperature dependences of the repetition period for lipid bilayers in the temperature range 20–55 ºС are obtained. A comparative analysis of the scattering curves obtained for multilayer membranes showed that,
below a temperature of 40 ºС, there emerges an additional ordering with a repetition period of 66 Å in the lipid mixture, which we associate with the lipid phase separation. A disappearance of the so-called ripple (wave-like) phase of DPPC lipid in the mixture is also observed.


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How to Cite

Bulavin Л., Solov’ev Д., Gorshkova Ю., Zhigunov О., Ivan’kov О., Gordelii В., & Kuklin О. (2012). Structural Transition in a Lipid−Water Liquid System. Ukrainian Journal of Physics, 57(6), 623.



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