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Morphology Development of Polymer Blends in Extruder: The Effects of Compatibilization and Rotation Rate
Author(s) -
Li Huaping,
Sundararaj Uttandaraman
Publication year - 2009
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.200800543
Subject(s) - compatibilization , plastics extrusion , polymer blend , materials science , polymer , microstructure , composite material , shear rate , copolymer , rheology
Abstract The effects of reactive compatibilization and extruder rotation rate on morphology development of polymer blends are studied. Morphology develops faster in compatibilized blends than that in their uncompatibilized counterparts. Based on force analysis, it has been proved that compatibilization facilitates dispersion by reducing slip at the interface of polymer phases. Rotation rate influences the morphology development of polymer blends by changing the residence time of polymers in the extruder. For uncompatibilized blends, the 400 rpm run results in finer microstructure at the outlet of the extruder than the 1 000 rpm run. Compatibilization suppresses this effect by reaching a steady‐state morphology before the outlet and results in similar microstructure for the 400 and 1 000 rpm runs.