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Título: | Influence of tructure on the properties of polypropylene copolymers and termopolymers |
Autor: | Caveda,Susana; Pérez, Ernesto CSIC ORCID; Blázquez-Blázquez, Enrique CSIC ORCID ; Peña, Begoña; van Grieken, Rafael; Suárez, Inmaculada; Benavente, Rosario CSIC ORCID | Palabras clave: | Isotactic polypropylene copolymers Terpolymers Polymorphism Mechanodynamical properties Optical properties |
Fecha de publicación: | 15-jun-2017 | Editor: | Elsevier | Citación: | Polymer Testing 62 : 23-32 (2017) | Resumen: | Several 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 editor: | https://dx.doi.org/10.1016/j.polymertesting.2017.06.008 | URI: | http://hdl.handle.net/10261/155965 | DOI: | 10.1016/j.polymertesting.2017.06.008 | ISSN: | 0142-9418 | E-ISSN: | 1873-2348 |
Aparece en las colecciones: | (ICTP) Artículos |
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