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Stereoblock polypropylene/isotactic polypropylene blends. I. Phase organization
Author(s) -
Canevarolo S.,
De Candia F.
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070541303
Subject(s) - tacticity , crystallinity , polypropylene , materials science , differential scanning calorimetry , crystallization , phase (matter) , polymer chemistry , spherulite (polymer physics) , molding (decorative) , composite material , polymer , chemical engineering , chemistry , organic chemistry , polymerization , thermodynamics , physics , engineering
The phase organization of stereoblock polypropylene/isotactic polypropylene blends has been analyzed. The different samples were prepared by a two‐stage process, that is, solvent casting followed by pressure molding. The analysis was carried out using techniques such as X‐ray diffraction, differential scanning calorimetry (DSC), and thermomicroscopy. The experimental results show that both the components segregate a crystalline phase and that the overall crystallinity, as well as the crystallinity of each component, is affected by the sample composition. Some evidence of co‐crystallization, at least for samples at low content in isotactic polypropylene, has been found. © 1994 John Wiley & Sons, Inc.