Thermodynamic Properties of Polyphenylquinoxaline in the Temperature Range of T → 0 to 570 K
- Authors: Smirnova N.N.1, Markin A.V.1, Samosudova Y.S.1, Bykova T.A.1, Shifrina Z.B.2, Serkova E.S.2, Kuchkina N.V.2
-
Affiliations:
- Lobachevsky University
- Nesmeyanov Institute of Organoelement Compounds
- Issue: Vol 92, No 2 (2018)
- Pages: 226-231
- Section: Chemical Thermodynamics and Thermochemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/169883
- DOI: https://doi.org/10.1134/S0036024418020206
- ID: 169883
Cite item
Abstract
The thermodynamic properties of amorphous polyphenylquinoxaline in the temperature range of 6 to 570 K are studied via precision adiabatic vacuum calorimetry and differential scanning calorimetry. The thermodynamic characteristics of glass transition are determined. Standard thermodynamic functions C°p, H°(T) − H°(0), S°(Т) − S°(0), and G°(T) − H°(0) in the range of T → 0 to 570 K and the standard entropy of formation at T = 298.15 K are calculated. The low-temperature (T ≤ 50 K) heat capacity is analyzed using a multifractal model for the processing of heat capacity, fractal dimension D values are determined, and conclusions on the topological structure of the compound are drawn.
About the authors
N. N. Smirnova
Lobachevsky University
Author for correspondence.
Email: smirnova@ichem.unn.ru
Russian Federation, Nizhny Novgorod, 603950
A. V. Markin
Lobachevsky University
Email: smirnova@ichem.unn.ru
Russian Federation, Nizhny Novgorod, 603950
Ya. S. Samosudova
Lobachevsky University
Email: smirnova@ichem.unn.ru
Russian Federation, Nizhny Novgorod, 603950
T. A. Bykova
Lobachevsky University
Email: smirnova@ichem.unn.ru
Russian Federation, Nizhny Novgorod, 603950
Z. B. Shifrina
Nesmeyanov Institute of Organoelement Compounds
Email: smirnova@ichem.unn.ru
Russian Federation, Moscow, 119991
E. S. Serkova
Nesmeyanov Institute of Organoelement Compounds
Email: smirnova@ichem.unn.ru
Russian Federation, Moscow, 119991
N. V. Kuchkina
Nesmeyanov Institute of Organoelement Compounds
Email: smirnova@ichem.unn.ru
Russian Federation, Moscow, 119991