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Molecular weight dependence and stereoselective chain cleavage during the early stages of the isotactic polypropylene pyrolysis

AuthorsMartínez, M. C.; Benavente, Rosario ; Gómez-Elvira González, José Manuel
Chain microstructure
NMR characterization
Issue DateJun-2017
CitationPolymer Degradation and Stability 143 : 26-34 (2017)
AbstractThe comparative study on the pyrolysis of two Polypropylene samples, with a similar high isotactic character but quite distinct molecular weights, reveals a significant difference in their thermal performances. The detailed qualitative analysis of the parameters, which are expected to govern the thermal degradation, leads to reasonably assume a main role of the molecular weight in their relative early stabilities. Furthermore, the correlation found between the sharp initial build-up of the Eact and the selective cleavage of isotactic stereosequences in both samples, suggests the relevance of the stereoregular length into the energy required for chain scission
Publisher version (URL)http://dx.doi.org/10.1016/j.polymdegradstab.2017.06.011
Appears in Collections:(ICTP) Artículos
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