The thermodynamics of the random copolymers of 3-IODO-9-N-Nvinyl carbazole and n-octyl methacrylate

Privalko, V. P.; Arbuzova, A.P.; Zagdanskaya, N.Ye.; Pas'ko, S.P.; Fedorova, L. N.

doi:10.1016/0032-3950(87)90016-5

Cited by 2 publications

(2 citation statements)

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“…It can be seen from Table 3 that the values of characteristic reducing parameters P*, T*, v* which are determined by a standard treatment [6,14] of experimental values of V with the aid ofEqs (8a) and (8b), are typical for non-polar carbochain polymers and reasonably well obey (Fig. 4) the following empirical correlations [17]:…”

Section: Properties Of the Melt Phasementioning

confidence: 94%

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Comprehensive thermal analysis of random copolymers of ethylene and 1-olefins

Privalko

Shmorgun

1992

Journal of Thermal Analysis

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Random copolymers of ethylene and propylene, butene-1 and hexene-I were characterised by measurements of heat capacity in the temperature interval 140-480 K and specific volume of the melt in the temperature interval 330--490 K and in the range of pressures 27.8-100 MPa. Analysis of the composition dependences, of the degree of crystallinity, melting and glass transition temperatures, as well as of thermodynamic and thermophysieal properties of the melt led to the conclusion about the microbloek structure of macromolecules of all series at molar ethylene content F1 > 0.8. In this range of compositions the properties of eopolymers in the melt seem to be independent of the chemical nature of a eomonomer, contrary to the solid state where at identical molar compositions, the degree of crystallinity diminishes and the melting temperature decreases, as the molecular structure of the comonomer becomes more complex. This effect becomes weaker as F1 decreases, so that in the composition range F1 < 0.8 the properties of eopolymers of all series are additive.

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Section: Properties Of the Melt Phasementioning

confidence: 94%

“…Similar plots were constructed for the other series. Provided that crystallinity does not interfere, any thermodynamic property of the amorphous phase of a copolymer, to the first approximation, must obey the following obvious additive relationship [14]:…”

Section: Thermal Transitionsmentioning

confidence: 99%