Glass Transitions of Ethylene Oxide Polymers

Glass Transitions of Ethylene Oxide Polymers

Glass transition temperatures of a very wide molecular-weight range of ethylene oxide polymers were measured by mechanical loss and by broadline NMR. Starting at about −95°C for ethylene glycol, the glass transition rises to a maximum of −17° for molecular weight 6000 and then drops off to −53° for...

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Veröffentlicht in:Journal of applied physics 1966-10, Vol.37 (11), p.3962-3964
Hauptverfasser: Faucher, J. A., Koleske, J. V., Santee, E. R., Stratta, J. J., Wilson, C. W.
Format: Artikel
Sprache:eng
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Zusammenfassung:Glass transition temperatures of a very wide molecular-weight range of ethylene oxide polymers were measured by mechanical loss and by broadline NMR. Starting at about −95°C for ethylene glycol, the glass transition rises to a maximum of −17° for molecular weight 6000 and then drops off to −53° for polymers with molecular weights greater than 200 000. This unusual behavior is probably caused by the high crystallinity of the intermediate molecular-weight polymers.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1707961