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CSJ Journals

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2018, Vol.47, No.2

240-242

Reduction of Shear Viscosity in Phospholipid Vesicle Dispersions by Self-organized Ripple Structures of Vesicle Surfaces

Koyomi Nakazawa ,Yuki Kawata ,Mafumi Hishida ,Yasuhisa Yamamura , and Kazuya Saito *
Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
https://doi.org/10.1246/cl.170959

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Abstract

Possible influence of the nanoscale rippled structure at a lipid vesicle surface on macroscopic physical properties of their dispersions was investigated. The macroscopic shear viscosity of highly concentrated lipid vesicle dispersions dramatically decreased under the conditions in which the ripple pattern was formed on surfaces. The decrease in the shear viscosity is suggested to originate in the prevention of aggregation of vesicles by mismatch of static rippled structures at vesicle surfaces.

figure

Possible influence of the nanoscale rippled structure at a lipid vesicle surface on macroscopic physical properties of their dispersions was investigated. The macroscopic shear viscosity of highly concentrated lipid vesicle dispersions dramatically decreased upon the formation of the ripple pattern on vesicle surfaces.

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