Electrokinetic Properties and Aggregate Stability
of Nanosized BiocolloidsInfluenza Virus Dispersions

L. M. Molodkina*, Yu. M. Chernoberezhskii**, and E. V. Golikova***

* St. Petersburg State Polytechnical University, Politekhnicheskaya ul. 29, St. Petersburg, 195251 Russia

** St. Petersburg Technological University of Plant Polymers, ul. Ivana Chernykh 4, St. Petersburg, 198095 Russia

*** Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences,
ul. Odoevskogo 24/2, St. Petersburg, 199155 Russia

Abstract—The electrical surface properties and aggregate stability of biological nanoparticles of three influ-
enza virus strains are investigated by laser microelectrophoresis and flow ultramicroscopy. The differences in
the character and kinetics of coagulation (reversible or superfast coagulation, the presence or absence of an
induction period, spontaneous disaggregation of particles) are explained by the specific features of the forma-
tion and structure of an electric double layer of the strains under consideration and by the structural transfor-
mations of surface virion components.

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