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Modeling droplet deformation in melt spinning of polymer blends
Author(s) -
Padsalgikar A. D.,
Ellison M. S.
Publication year - 1997
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11744
Subject(s) - materials science , polypropylene , spinning , polystyrene , composite material , deformation (meteorology) , extensional definition , melt spinning , polymer , shear (geology) , shear flow , flow (mathematics) , fiber , mechanics , paleontology , physics , biology , tectonics
Abstract We report the results of a study of droplet deformation in uniaxial elongational flow under nonisothermal conditions. A mathematical model is developed that simulates deformation conditions in fiber spinning. To test our model, a blend of polypropylene and polystyrene was spun into fibers. The blend morphology of the fibers is accurately predicted by the proposed model. Morphological studies have shown that immiscible additives remain dispersed in the matrix as suspended droplets and that the droplets are elongated into fibrils under the action of shear or extensional forces during processing.