Systematic study of the thermal diffusion in associated mixtures

The Journal of Chemical Physics
Pavel Polyakov, Simone Wiegand

Abstract

We performed systematic temperature and concentration dependent measurements of the Soret coefficient in different associated binary mixtures of water, deuterated water, dimethyl sulfoxide (DMSO), methanol, ethanol, acetone, methanol, 1-propanol, 2-propanol, and propionaldehyde using the so-called thermal diffusion forced Rayleigh scattering method. For some of the associating binary mixtures such as ethanol/water, acetone/water, and DMSO/water, the concentration xw+/- at which the Soret coefficient changes its sign does not depend on temperature and is equal to the concentration xw x where the Soret coefficient isotherms intersect. For others such as 1-propanol/water, 2-propanol/water, and ethanol/DMSO, the sign change concentration is temperature dependent, which is the typical behavior observed for nonassociating mixtures. For systems with xw+/-=xw x, we found that xw+/- depends linearly on the ratio of the vaporization enthalpies of the pure components. Probably due to the similarity of methanol and DMSO, we do not observe a sign change for this mixture. The obtained results are related to structural changes in the fluid observed by nuclear magnetic resonance, mass spectrometric, and x-ray experiments in the literature. Fur...Continue Reading

References

Aug 11, 2001·Physical Review Letters·C Debuschewitz, W Köhler
Oct 29, 2005·The Journal of Chemical Physics·Sérgio M Vechi, Munir S Skaf
Jun 15, 2006·The Journal of Physical Chemistry. B·Hui NingSimone Wiegand
Dec 21, 2006·The Journal of Chemical Physics·Hui Ning, Simone Wiegand
May 16, 2007·Physical Review Letters·Pierre-Arnaud Artola, Bernard Rousseau
Jul 14, 2007·The Journal of Chemical Physics·Pavel PolyakovSimone Wiegand

❮ Previous
Next ❯

Citations

Jun 14, 2013·The Journal of Chemical Physics·Shyamtanu ChattorajKankan Bhattacharyya
Dec 3, 2008·The Journal of Chemical Physics·Pablo BlancoCarlos Santamaria
Oct 24, 2014·The European Physical Journal. E, Soft Matter·Kousaku MaedaRio Kita
Apr 5, 2016·Proceedings of the National Academy of Sciences of the United States of America·Doreen NietherSimone Wiegand
Oct 21, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Amninder S VirkWilliam S Price
Sep 7, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Doreen Niether, Simone Wiegand
Feb 13, 2020·Polymers·Doreen NietherSimone Wiegand
Mar 17, 2018·The Journal of Chemical Physics·Sylvie AntounSeshasai Srinivasan
Aug 3, 2018·The Journal of Chemical Physics·Doreen NietherSimone Wiegand
May 31, 2019·The European Physical Journal. E, Soft Matter·Monika BjelčićSimone Wiegand
Dec 22, 2016·The European Physical Journal. E, Soft Matter·Olga SyshchykSimone Wiegand
Apr 7, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Morteza Eslamian, M Ziad Saghir
Jan 23, 2010·The Journal of Physical Chemistry. B·Bastian ArltSimone Wiegand
Aug 6, 2010·The Journal of Physical Chemistry. B·Pablo BlancoSimone Wiegand
Jun 14, 2013·The Journal of Physical Chemistry. B·Frank RömerFernando Bresme
Jan 5, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Zilin WangSimone Wiegand

❮ Previous
Next ❯

Methods Mentioned

BETA
NMR
x-ray scattering
nuclear magnetic resonance

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Physical Review Letters
Franz M Weinert, D Braun
Proceedings of the National Academy of Sciences of the United States of America
Stefan Duhr, D Braun
© 2021 Meta ULC. All rights reserved