Shear and dielectric responses of propylene carbonate, tripropylene glycol, and a mixture of two secondary amides

Catalin Gainaru, Tina Hecksher, Niels Boye Olsen, Roland Böhmer, J. C. Dyre

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Propylene carbonate and a mixture of two secondary amides, N-ethylformamide and Nethylacetamide, are investigated by means of broadband dielectric and mechanical shear spectroscopy. The similarities between the rheological and the dielectric responses of these liquids and of the previously investigated tripropylene glycol are discussed within a simple approach that employs
an electrical circuit for describing the frequency-dependent behavior of viscous materials. The circuit is equivalent to the Gemant-DiMarzio-Bishop model, but allows for a negative capacitive element. The circuit can be used to calculate the dielectric from the mechanical response and vice versa. Using a single parameter for a given system, good agreement between model calculations and experimental data is achieved for the entire relaxation spectra, including secondary relaxations and the Debye-like dielectric peak in the secondary amides. In addition, the predictions of the shoving model are confirmed for the investigated liquids
OriginalsprogEngelsk
TidsskriftJournal of Chemical Physics
Vol/bind137
Udgave nummer6
Sider (fra-til)064508-1 - 064508-10
Antal sider10
ISSN0021-9606
DOI
StatusUdgivet - 2012

Citer dette

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title = "Shear and dielectric responses of propylene carbonate, tripropylene glycol, and a mixture of two secondary amides",
abstract = "Propylene carbonate and a mixture of two secondary amides, N-ethylformamide and Nethylacetamide, are investigated by means of broadband dielectric and mechanical shear spectroscopy. The similarities between the rheological and the dielectric responses of these liquids and of the previously investigated tripropylene glycol are discussed within a simple approach that employsan electrical circuit for describing the frequency-dependent behavior of viscous materials. The circuit is equivalent to the Gemant-DiMarzio-Bishop model, but allows for a negative capacitive element. The circuit can be used to calculate the dielectric from the mechanical response and vice versa. Using a single parameter for a given system, good agreement between model calculations and experimental data is achieved for the entire relaxation spectra, including secondary relaxations and the Debye-like dielectric peak in the secondary amides. In addition, the predictions of the shoving model are confirmed for the investigated liquids",
author = "Catalin Gainaru and Tina Hecksher and Olsen, {Niels Boye} and Roland B{\"o}hmer and Dyre, {J. C.}",
year = "2012",
doi = "10.1063/1.4740236",
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journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics",
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Shear and dielectric responses of propylene carbonate, tripropylene glycol, and a mixture of two secondary amides. / Gainaru, Catalin ; Hecksher, Tina; Olsen, Niels Boye; Böhmer, Roland; Dyre, J. C.

I: Journal of Chemical Physics, Bind 137, Nr. 6, 2012, s. 064508-1 - 064508-10.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Shear and dielectric responses of propylene carbonate, tripropylene glycol, and a mixture of two secondary amides

AU - Gainaru, Catalin

AU - Hecksher, Tina

AU - Olsen, Niels Boye

AU - Böhmer, Roland

AU - Dyre, J. C.

PY - 2012

Y1 - 2012

N2 - Propylene carbonate and a mixture of two secondary amides, N-ethylformamide and Nethylacetamide, are investigated by means of broadband dielectric and mechanical shear spectroscopy. The similarities between the rheological and the dielectric responses of these liquids and of the previously investigated tripropylene glycol are discussed within a simple approach that employsan electrical circuit for describing the frequency-dependent behavior of viscous materials. The circuit is equivalent to the Gemant-DiMarzio-Bishop model, but allows for a negative capacitive element. The circuit can be used to calculate the dielectric from the mechanical response and vice versa. Using a single parameter for a given system, good agreement between model calculations and experimental data is achieved for the entire relaxation spectra, including secondary relaxations and the Debye-like dielectric peak in the secondary amides. In addition, the predictions of the shoving model are confirmed for the investigated liquids

AB - Propylene carbonate and a mixture of two secondary amides, N-ethylformamide and Nethylacetamide, are investigated by means of broadband dielectric and mechanical shear spectroscopy. The similarities between the rheological and the dielectric responses of these liquids and of the previously investigated tripropylene glycol are discussed within a simple approach that employsan electrical circuit for describing the frequency-dependent behavior of viscous materials. The circuit is equivalent to the Gemant-DiMarzio-Bishop model, but allows for a negative capacitive element. The circuit can be used to calculate the dielectric from the mechanical response and vice versa. Using a single parameter for a given system, good agreement between model calculations and experimental data is achieved for the entire relaxation spectra, including secondary relaxations and the Debye-like dielectric peak in the secondary amides. In addition, the predictions of the shoving model are confirmed for the investigated liquids

U2 - 10.1063/1.4740236

DO - 10.1063/1.4740236

M3 - Journal article

VL - 137

SP - 064508-1 - 064508-10

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 6

ER -