The re-evaluation of multiple peaks in the DSC melting endotherm of isotactic polypropylene

From X-ray, DSC and i.r. study, the appearance of multiple peaks in the melting endotherm of isotactic polypropylene has been shown to arise from α-crystalline regions alone with little influence from the β crystal form. Contrary to the appearance of the DSC thermogram, we suggest that only two genu...

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Bibliographic Details
Published in:European polymer journal 1990, Vol.26 (6), p.631-638
Main Authors: Passingham, C., Hendra, P.J., Cudby, M.E.A., Zichy, V., Weller, M.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Thermal and thermodynamic properties
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Summary:From X-ray, DSC and i.r. study, the appearance of multiple peaks in the melting endotherm of isotactic polypropylene has been shown to arise from α-crystalline regions alone with little influence from the β crystal form. Contrary to the appearance of the DSC thermogram, we suggest that only two genuine melting endotherms might be present and that the shape of the thermogram is modified by exothermic processes.
ISSN:0014-3057
1873-1945
DOI:10.1016/0014-3057(90)90219-T