Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов (Dec 2020)

DETERMINATION OF OPTIMAL MODES FOR MEASURING THE SIZE OF COLLOIDAL PARTICLES BY PHOTON-CORRELATION SPECTROSCOPY AND ACOUSTIC SPECTROSCOPY

  • M.A. Yasnaya,
  • A.V. Blinov,
  • A.A. Blinovа,
  • I.M. Shevchenko,
  • D.G. Maglakelidze,
  • A.O. Senkova

DOI
https://doi.org/10.26456/pcascnn/2020.12.232
Journal volume & issue
no. 12
pp. 232 – 242

Abstract

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This paper presents the results of measuring the size of colloidal SiO2 particles by two methods – photon-correlation spectroscopy of dynamic light scattering and acoustic spectroscopy. Mathematical processing of experimental data using the software of the Photocor-Complex and DT-1202 spectrometers made it possible to obtain of the size distribution histograms for silicon dioxide colloidal particles in a standard sample. For the first time it has been established that the optimal parameters for measuring the size of colloidal SiO2 particles by the photon-correlation spectroscopy are the substance concentration less than 1 %, the photodetector position angle of 90 degrees and the number of measurements in a cycle of 100 - 150, and for the acoustic spectroscopy – 1 % substance concentration.

Keywords