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Título

Influence of tructure on the properties of polypropylene copolymers and termopolymers

AutorCaveda,Susana; Pérez, Ernesto CSIC ORCID; Blázquez-Blázquez, Enrique CSIC ORCID ; Peña, Begoña; van Grieken, Rafael; Suárez, Inmaculada; Benavente, Rosario CSIC ORCID
Palabras claveIsotactic polypropylene copolymers
Terpolymers
Polymorphism
Mechanodynamical properties
Optical properties
Fecha de publicación15-jun-2017
EditorElsevier
CitaciónPolymer Testing 62 : 23-32 (2017)
ResumenSeveral Ziegler-Natta copolymers of iPP with ethylene or 1-butene, and terpolymers with both counits have been characterized, devoting special attention to the effect of composition and processing conditions on the crystal structure and final properties. DSC and X-ray diffraction were used to study the polymorphism of copolymers and terpolymers. Comonomer insertion interrupts the isotactic sequences, acting as a structural defect, and the formation of g form is enhanced. Moreover, crystallinity decreases and crystal structure is modified. Comonomer type and concentration determine the extent of these modifications, resulting in important changes in macroscopic properties. In particular, the excellent optical properties of the analyzed terpolymers make them very attractive for applications such as transparent film or packaging
Versión del editorhttps://dx.doi.org/10.1016/j.polymertesting.2017.06.008
URIhttp://hdl.handle.net/10261/155965
DOI10.1016/j.polymertesting.2017.06.008
ISSN0142-9418
E-ISSN1873-2348
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