Amorphous phase state diagrams and viscosity of ternary aqueous organic/organic and inorganic/organic mixtures

Aleks Marsh, Sarah Suda Petters, Nicholas Rothfuss, Grazia Rovelli, Young Chul Song, Jonathan Reid, Markus Petters

Research output: Contribution to journalArticle (Academic Journal)peer-review

19 Citations (Scopus)
384 Downloads (Pure)

Abstract

A Dimer Coagulation, Isolation and Coalescence (DCIC) technique is used to probe the phase behaviour and glass transition temperatures of ternary aerosol mixtures. The DCIC technique is used to perform temperature and relative humidity dependent viscosity measurements at viscosities near 5×106 Pa∙s. Measurements include organic-organic and organic-inorganic mixtures composed of sucrose-citric acid and sucrose-sodium nitrate. The data reported here add additional insight into the wide discrepancies in glass transition temperatures reported for pure sodium nitrate. The phase diagram model used in the work of Rothfuss and Petters (Phys. Chem. Chem. Phys., 2017, 19, 6532-6545) is expanded to include multiple solute components. Data and model predictions of the mixtures are in good agreement with the modified model. These measurements are compared with values from Holographic Optical Tweezer (HOT) measurements taken at room temperature. Overall, the viscosities determined from the DCIC and HOT techniques are in good agreement.
Original languageEnglish
Pages (from-to)15086-15097
Number of pages12
JournalPhysical Chemistry Chemical Physics
Volume20
Issue number22
Early online date24 May 2018
DOIs
Publication statusPublished - 14 Jun 2018

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