THERMODYNAMIC PROPERTIES OF DENDRITIC PER FLUORINATED POLY(PHENYLENEGERMANE) AT 0-550 K

Authors
LEBEDEV BV SMIRNOVA NN VASILEV VG BOCHKAREV MN
Citation
Bv. Lebedev et al., THERMODYNAMIC PROPERTIES OF DENDRITIC PER FLUORINATED POLY(PHENYLENEGERMANE) AT 0-550 K, Vysokomolekularnye soedinenia. Seria A, 38(6), 1996, pp. 999-1005
Citations number
28
Categorie Soggetti
Polymer Sciences
Journal title
Vysokomolekularnye soedinenia. Seria A → ACNP
ISSN journal
05075475
Volume
38
Issue
6
Year of publication
1996
Pages
999 - 1005
Database
ISI
SICI code
0507-5475(1996)38:6<999:TPODPF>2.0.ZU;2-V
Abstract
The temperature dependence of heat capacity C-p(0) of perfluorinated p oly(phenylenegermane) was studied with vacuum adiabatic and dynamic ca lorimeters at 5-500 K. This substance falls into a class of dendritic polymers highly branched star-shaped skeleton forms spherical-shaped m acromolecules. Three relaxation regions were observed on the C-p(0) = f(T) plot at 14-22, 200-245, and 425-440 K. The data obtained were use d to calculate the thermodynamic functions C-p(0)(T), H-0(T)-H-0(0), S -0(T), and G(0)(T)-H-0(0) at 0-550 K.