Thermodynamics of the terpolymer of carbon monoxide, ethylene, and 1-butene

Calorimetric Study of Polyketone Formed from Carbon Monoxide, Ethylene and Butene-1

“…This is allowed to evaluate the absolute values of entropy for amorphous polymers according to the third law of thermodynamics with allowance made for zero entropy 0 S (0). Table 1 lists the glass transition temperature and thermodynamic characteristics of devitrification for COEB-1 [10]. Devitrification of COEB-1 also proceeds in two stages, as with COEB-2.…”

“…In the literature there are data about fusion enthalpy of completely crystalline β-phase of the alternating copolymer carbon monoxide-ethylene [3], equaling 7.79 kJ/mole. This fact has helped in evaluating the crystallinity degree (α) of the terpolymer sample from the formula Table 2 also contains the thermodynamic parameters of fusion for COEB-1 [10]. The copolymer COEB-1 melts in two stages, just as the studied copolymer.…”

“…In the earlier papers we have investigated the thermodynamic properties of alternating copolymers (1 : 1) of carbon monoxide with ethylene (COE), propylene (COP), some cyclodienes [3][4][5][6][7][8], as well as the samples of terpolymers of carbon monoxide, ethylene and propylene (mole fraction of the propylene blocks is up to 30 %) [9] and of carbon monoxide, ethylene and butene-1 (COEB-1) (mole fraction of the butane units is 10.7 %) [10]. This study is the extension of the research on terpolymers.…”