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Fusion enthalpy and entropy of isotactic polypropylene

โœ Scribed by F. Danusso; G. Gianotti

Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
308 KB
Volume
4
Category
Article
ISSN
0014-3057

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โœฆ Synopsis

The "equilibrium melting temperature" of isotactic polypropylene and of a number of its mixtures with hexadecane, c,-chloronaphthalene, decalin and naphthalene is determined by extrapolation of several experimental melting temperature data obtained by rapid melting of each sample isothermally crystallized at different temperatures.

A fusion enthalpy of 1900 + 300 cal/unit and a fusion entropy of 4.2_ 0.7 e.u./unit are calculated as the most probable values for the pure polymer and compared with corresponding values previously found or suggested in the literature.

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