Thermodynamic Properties of Polyphenylquinoxaline in the Temperature Range of T → 0 to 570 K

被引：1

作者：

Smirnova, N. N. ^{[1
]}

Markin, A. V. ^{[1
]}

Samosudova, Ya. S. ^{[1
]}

Bykova, T. A. ^{[1
]}

Shifrina, Z. B. ^{[2
]}

Serkova, E. S. ^{[2
]}

Kuchkina, N. V. ^{[2
]}

机构：

[1] Lobachevsky Univ, Nizhnii Novgorod 603950, Russia

[2] Russian Acad Sci, Nesmeyanov Inst Organoelement Cpds, Moscow 119991, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2018年 / 92卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

polyphenylquinoxaline; adiabatic calorimetry; differential scanning calorimetry; heat capacity; thermodynamic functions; HEAT-CAPACITY; POLYMERS;

D O I：

10.1134/S0036024418020206

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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 (A degrees) (p), HA degrees(T) - HA degrees(0), SA degrees(D cent) - SA degrees(0), and GA degrees(T) - HA degrees(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 ae<currency> 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.

引用

页码：226 / 231

页数：6

共 19 条

[1] ON TEMPERATURE DEPENDENCE OF COOPERATIVE RELAXATION PROPERTIES IN GLASS-FORMING LIQUIDS [J].