Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 95: Issue 1
Thermodynamic properties of poly[ bis (trifluoroethoxy) phosphazene] in the range from T →0 TO 620 K
Authors:
N. Smirnova Research Institute of Chemistry Nizhny Novgorod University Gagarin Prospekt 23/5 603950 Nizhny Novgorod Russia

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B. Lebedev Research Institute of Chemistry Nizhny Novgorod University Gagarin Prospekt 23/5 603950 Nizhny Novgorod Russia

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T. Bykova Research Institute of Chemistry Nizhny Novgorod University Gagarin Prospekt 23/5 603950 Nizhny Novgorod Russia

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A. Markin Research Institute of Chemistry Nizhny Novgorod University Gagarin Prospekt 23/5 603950 Nizhny Novgorod Russia

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D. Tur A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences Vavilov Str. 28 117813 Moscow Russia

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Pages:
229–234
Online Publication Date:
13 Oct 2008
Publication Date:
01 Jan 2009
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-008-9038-7
Restricted access

Abstract  

By adiabatic vacuum and dynamic calorimetry, heat capacity for poly[bis(trifluoroethoxy)phosphazene] has been determined over the 6–620 K range. Physical transformations of the polymer on its heating and cooling have been detected and characterized. Smoothed heat capacity Cp0(T) and standard thermodynamic functions (H0(T)-H0(0), S0(T) and G0(T)-H0(0)) of poly[bis(trifluoroethoxy)phosphazene] have been evaluated for the temperature range from T→0 to 560 K. The standard entropy of formation ΔfS0 at T=298.15 K has been also determined. Fractal dimensions D in the heat capacity function of the multifractal variant of Debye’s theory of heat capacity of solids characterizing the heterodynamics of the tested polymer have been determined.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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