info:eu-repo/semantics/article
Modification of propylene-α-olefin copolymers by maleic anhydride grafting and blending
Fecha
2019-04-15Registro en:
Riechert, Verónica Mariel; Ferrofino, Aníbal Sergio Gustavo; Ressia, Jorge A.; Failla, Marcelo Daniel; Quinzani, Lidia Maria; Modification of propylene-α-olefin copolymers by maleic anhydride grafting and blending; Taylor & Francis Ltd; International Journal of Polymer Analysis and Characterization; 24; 4; 15-4-2019; 355-373
1023-666X
1563-5341
CONICET Digital
CONICET
Autor
Riechert, Verónica Mariel
Ferrofino, Aníbal Sergio Gustavo
Ressia, Jorge A.
Failla, Marcelo Daniel
Quinzani, Lidia Maria
Resumen
Five commercial random propylene-α-olefin copolymers were functionalized with maleic anhydride by reactive mixing. Materials and blends of the original polymers with the grafted ones were characterized by IR, SEC, rheology, XRD, and DSC. The effects of ethylene content and average molecular weights on the effectiveness of scission and grafting reactions were investigated. Functionalization gives place to thermo-rheologically simple materials whose dynamic properties are in agreement with the measured molecular weights. The blends, which stand as miscible ones, display terminal dynamic moduli and crystallization and melting temperatures that show slight positive deviation with respect to linear mixing rules.