The thermodynamics of the polypentenamer (PPM)

Autor:	I.B. Rabinovich, Yu.V. Korshak, V.M. Kuteinikov, V.Ya. Lityagov, B.V. Lebedev
Rok vydání:	1976
Předmět:	Polymerization Chemistry General Engineering Physical chemistry Thermodynamics Temperature limit Adiabatic process Amorphous solid
Zdroj:	Polymer Science U.S.S.R.. 18:2789-2797
ISSN:	0032-3950
DOI:	10.1016/0032-3950(76)90217-3
Popis:	The heat content C°p of the polypentenamer (PPM) was determined in an adiabatic vacuum calorimeter in the 14–322°K range with a 0·2% error. We found the Tg, m.p. and ΔHm.p., and calculated the functions H°TH°0 S°TS°T, G°TH°0 for the amorphous and crystalline PPM in the 0–325°K range. The zero entropy of the completely amorphous PPM was assessed (S°0 = 12.6 J·mole−1·K−1) and the difference between the zero enthalpies of the completely amorphous and 100% crystalline PPM (H°0,aH°0,c = 5000 J·mole−1·°K−1). The H°p of the liquid cylopentene (CP) present in the amorphous PPM was determined and the ΔH°p, ΔS°p, ΔG°p, Kp, [M]e values were calculated for the 0–325°K range. The upper temperature limit of the CP polymerization Tu.1 = 372°K.
Databáze:	OpenAIRE
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