Issue 22, 2018

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

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.

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

Supplementary files

Article information

Article type
Paper
Submitted
01 Feb 2018
Accepted
29 Apr 2018
First published
24 May 2018
This article is Open Access
Creative Commons BY license

Phys. Chem. Chem. Phys., 2018,20, 15086-15097

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

A. Marsh, S. S. Petters, N. E. Rothfuss, G. Rovelli, Y. C. Song, J. P. Reid and M. D. Petters, Phys. Chem. Chem. Phys., 2018, 20, 15086 DOI: 10.1039/C8CP00760H

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