- Tytuł:
-
Molowa entropia orientacyjna i struktura cieczy zasocjowanych
Molar orientation entropy and structure of the self-associated liquids - Autorzy:
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Jadżyn, J.
Świergiel, J. - Powiązania:
- https://bibliotekanauki.pl/articles/172403.pdf
- Data publikacji:
- 2017
- Wydawca:
- Polskie Towarzystwo Chemiczne
- Tematy:
-
dipole molekularne
przenikalność statyczna
entropia orientacyjna
ciecz
wiązania wodorowe
przejście fazowe ciecz izotropowa-nematyk
molecular dipoles
static permittivity
orientation entropy
liquids
hydrogen bonds
isotropic liquids to nematic phase transition - Opis:
- Research on the structural effects of intermolecular interactions not only brings us closer to a better understanding the macroscopic properties of liquids, but also allows one to modify these properties. Intermolecular dipolar couplings and hydrogen bonds are the most common interactions in liquids leading to formation of multimolecular entities with various structures. The natural rival of these interactions is the thermal agitation of molecules (kT), which aims to destroy the emerging structures. In this paper we present an experimental method to estimate the way of molecular self-assembly resulting from the simultaneous action of kT and intermolecular interactions. The method is based on the study of dipolar orientation effects induced by an applied electric field. As an experimental source of the information on these effects is temperature derivative of the static permittivity of tested liquid. That derivative is proportional to the liquid entropy change due to the ordering action of the electric field on the molecular dipoles. Here, we present the experimental results on temperature dependence of the static permittivity and increment of the orientation entropy of liquids where the self-association process realizes with two ways: dipolar couplings and hydrogen-bonds.
- Źródło:
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Wiadomości Chemiczne; 2017, 71, 7-8; 517-532
0043-5104
2300-0295 - Pojawia się w:
- Wiadomości Chemiczne
- Dostawca treści:
- Biblioteka Nauki
Artykuł