Sodium silicate particle size measurements using time-resolved fluorescence anisotropy

Doveiko, Daniel and Stebbing, Simon and Chen, Yu and Vyshemirsky, Vladislav and Birch, David and Rolinski, Olaf (2023) Sodium silicate particle size measurements using time-resolved fluorescence anisotropy. In: SUPA Annual Gathering 2023, 2023-05-16 - 2023-05-16.

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Abstract

We present a development of the method for determining the particle sizes in sodium silicate liquors at high pH by using the measurement of time-resolved fluorescence anisotropy. Rather than the previous approach of using a single dye label, we demonstrate the use and advantages of using two fluorescent labels. Rotational times of the non-binding rhodamine B and electrostatically binding rhodamine 6G are used to independently determine the medium microviscosity and the silicate particle radius, respectively. The anisotropy measurements were performed on the range of samples prepared by diluting the stock solution of silicate to the concentrations ranging between 0.2M and 2M of NaOH and on the stock solution at different temperatures. The recovered average particle size has an upper limit of 7.0±1.2Å.

ORCID iDs

Doveiko, Daniel ORCID logoORCID: https://orcid.org/0000-0002-0516-689X, Stebbing, Simon, Chen, Yu, Vyshemirsky, Vladislav, Birch, David ORCID logoORCID: https://orcid.org/0000-0001-6400-1270 and Rolinski, Olaf ORCID logoORCID: https://orcid.org/0000-0002-7838-779X;
  • Item type:Conference or Workshop Item(Poster)
    ID code:89141
    Dates:
    Date
    Event
    16 May 2023
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:07 May 2024 15:03
    Last modified:11 Nov 2024 17:11
    URI:https://strathprints.strath.ac.uk/id/eprint/89141
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