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Crystallization of poly(ethylene oxide) in i-polypropylene–poly(ethylene oxide) blends

✍ Scribed by T. Kowalewski; G. Ragosta; E. Martuscelli; A. Galeski

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
294 KB
Volume
66
Category
Article
ISSN
0021-8995

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✦ Synopsis

A two-stage stable system of isotactic polypropylene-poly(ethylene oxide) blend, in which poly(ethylene oxide) can be permanent either in molten or in crystallized states in the temperature range from 280 to 327 K, was described. The behavior of that blend was explained in terms of fractionated crystallization. A fine dispersion of poly(ethylene oxide) inclusions is required for efficient suppression of crystallization initiated by heterogeneous nuclei. The application of a thin film of polypropylenepoly(ethylene oxide) 9 : 1 blend obtained by quenching for multiuse erasable and rewritable carriers for visible information has been demonstrated. The same sample exhibits different dynamic mechanical properties when poly(ethylene oxide) inclusions are molten or crystallized.

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