Reference : Temperature modulated optical refractometry: A quasi-isothermal method to determine t...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/12341
Temperature modulated optical refractometry: A quasi-isothermal method to determine the dynamic volume expansion coefficient
English
Müller, Ulrich [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Philipp, Martine [Technische Universität München - TUM]
Thomassey, Matthieu mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Sanctuary, Roland mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Krüger, Jan-Kristian mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
2013
Thermochimica Acta
Elsevier Science
555
17-22
Yes (verified by ORBilu)
International
0040-6031
[en] The volume expansion coefficient is a thermodynamic key parameter yielding insight into molecular
cohesion and organization of condensed matter. We present here the novel experimental technique temperature
modulated optical refractometry (TMOR) to determine not only the static but also the dynamic
volume expansion coefficient of transparent condensed matter of cubic or isotropic symmetry. A specialty
of TMOR is its capability to measure the volume expansion coefficient under quasi-isothermal
conditions. In this experimental mode TMOR is able to differentiate between static, dynamic and kinetic
contributions to the volume expansion coefficient. Due to these features TMOR especially qualifies for
the investigation of structural changes provoked by structural phase transitions, glass transitions and
other structure-related transformations in transparent condensed matter. The scientific potential of this
novel experimental technique is demonstrated by evidencing anomalies of the complex volume expansion
coefficient accompanying the chemically induced glass transition occurring during the formation of
a covalently cross-linked epoxy network.
http://hdl.handle.net/10993/12341

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