Premium
The Influence of Blend Morphology (Co‐Continuous or Sub‐Micrometer Droplets Dispersions) on the Nucleation and Crystallization Kinetics of Double Crystalline Polyethylene/Polyamide Blends Prepared by Reactive Extrusion
Author(s) -
Córdova Miguel E.,
Lorenzo Arnaldo T.,
Müller Alejandro J.,
Gani Léa,
TencéGirault Sylvie,
Leibler Ludwik
Publication year - 2011
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201100039
Subject(s) - nucleation , crystallization , polyamide , reactive extrusion , kinetics , materials science , chemical engineering , morphology (biology) , extrusion , polymer chemistry , polymer blend , polyethylene , micrometer , phase (matter) , dispersion (optics) , polymer , composite material , copolymer , chemistry , organic chemistry , physics , optics , quantum mechanics , biology , engineering , genetics
Reactive blending of functionalized polyethylenes (PE) and polyamides (PA) is performed by carefully choosing extrusion conditions and polymeric materials in order to obtain two types of stable morphologies. The first blend type yields a co‐continuous morphology and the second type a dispersion of sub‐micron droplets of the PA phase in a PE matrix. The crystallization kinetics of the PA change from a sigmoidal classical type (for the co‐continuous blend) to first‐order kinetics in the case of the sub‐micron PA droplets. The results demonstrate an intimate relationship between blend morphology and nucleation and crystallization kinetics of the blend components.