Vibrational spectroscopic study of structural changes in isotactic polypropylene below the melting point

Some 30°C below the melting point in annealed samples of highly crystalline polypropylene, considerable changes occur in the coefficient of linear expansion and in a wide variety of temperature derivatives of spectroscopic features. It is shown that these changes are athermal and therefore are not a...

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Veröffentlicht in:	Polymer (Guilford) 1988-10, Vol.29 (10), p.1843-1847
Hauptverfasser:	Hanna, L.A., Hendra, P.J., Maddams, W., Willis, H.A., Zichy, V., Cudby, M.E.A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Exact sciences and technology isotactic polypropylene nuclear magnetic resonance Organic polymers Physicochemistry of polymers premelting Properties and characterization Structure, morphology and analysis vibrational spectroscopy
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Some 30°C below the melting point in annealed samples of highly crystalline polypropylene, considerable changes occur in the coefficient of linear expansion and in a wide variety of temperature derivatives of spectroscopic features. It is shown that these changes are athermal and therefore are not attributable to premelting as has been suggested in the past.
ISSN:	0032-3861 1873-2291
DOI:	10.1016/0032-3861(88)90401-6