Immiscible blend morphology after shear and elongation. Batch, G., Trifkovic, M., Hedegaard, A., & Macosko, C. In AIP Conference Proceedings, volume 1664, 2015. abstract bibtex © 2015 AIP Publishing LLC.This work examines the role of shear and extensional strain on immiscible blend morphology, namely domain size, orientation, and co-continuity. The domain size reduces with surface tension similar to what is observed with isolated droplets. The domain size is shown to increase with shear strain due to coalescence. Hence the best mixing is found with low shear strains, i.e. low rates of shear and short durations of time. Extensional strain (extrusion draw ratio DR) reduces phase width and thickneb with a DR-0.5 dependence, suggesting the transformation to a fibrilar morphology. The critical draw ratio for morphology transformation is approximately 7, in agreement with observations by Grace for droplet breakup in elongation. Fibrilar morphology is also consistent with a large increase in strain-To-break in the drawn film and with observed creep and optical scattering behavior.
@inProceedings{
title = {Immiscible blend morphology after shear and elongation},
type = {inProceedings},
year = {2015},
identifiers = {[object Object]},
keywords = {[Blends, Extensional Flow, Morphology, Polymer Pro},
volume = {1664},
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created = {2016-10-13T17:09:54.000Z},
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abstract = {© 2015 AIP Publishing LLC.This work examines the role of shear and extensional strain on immiscible blend morphology, namely domain size, orientation, and co-continuity. The domain size reduces with surface tension similar to what is observed with isolated droplets. The domain size is shown to increase with shear strain due to coalescence. Hence the best mixing is found with low shear strains, i.e. low rates of shear and short durations of time. Extensional strain (extrusion draw ratio DR) reduces phase width and thickneb with a DR-0.5 dependence, suggesting the transformation to a fibrilar morphology. The critical draw ratio for morphology transformation is approximately 7, in agreement with observations by Grace for droplet breakup in elongation. Fibrilar morphology is also consistent with a large increase in strain-To-break in the drawn film and with observed creep and optical scattering behavior.},
bibtype = {inProceedings},
author = {Batch, G.L. and Trifkovic, M. and Hedegaard, A. and Macosko, C.W.},
booktitle = {AIP Conference Proceedings}
}
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