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Chain Features and Their Influence on the Thermal Stability of Poly(propylene-co-1-nonene) Copolymers

AuthorsQiong, W. ; García-Peñas, Alberto; Barranco-García, Rosa; Cerrada, María L. ; Benavente, Rosario ; Pérez, Ernesto ; Gómez-Elvira González, José Manuel
Chain microstructure
Thermal stability
Issue Date2019
PublisherJohn Wiley & Sons
CitationMacromolecular Chemistry and Physics (2019)
AbstractThe thermal stability of several isotactic polypropylenes and propylene-co-1-nonene copolymers is assessed under nitrogen by means of thermogravimetric analysis (TGA). The samples involve wide ranges of molecular weight, isotactic average length, and 1-nonene content, in order to perform a comprehensive analysis of the effect that chain features exert on the apparent activation energy (E), in the initial stages of the molten state degradation. The degradation process correlates with chain mobility and, accordingly, with chain features that are linked to. Thus, microstructure and chain size are found to play a key role. In fact, isotactic average length of propylene sequences and molecular weight are driving factors in the E required for main chain thermal scission.
Publisher version (URL)http://dx.doi.org/10.1002/macp.201900175
Identifiersdoi: 10.1002/macp.201900175
issn: 1022-1352
e-issn: 1521-3935
Appears in Collections:(ICTP) Artículos
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