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Article: Erosion and Breakup of Polymer Drops Under Simple Shear in High Viscosity Ratio Systems

TitleErosion and Breakup of Polymer Drops Under Simple Shear in High Viscosity Ratio Systems
Authors
KeywordsDeformation
Differential Scanning Calorimetry
Drop Breakup
Erosion
Flow Visualization
High Temperature Effects
Least Squares Approximations
Polymer Blends
Regression Analysis
Shear Flow
Viscosity
Vortex Flow
Issue Date2003
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.4spe.org/periodicals/journals/pes.htm
Citation
Polymer Engineering and Science, 2003, v. 43 n. 4, p. 891-904 How to Cite?
AbstractThe deformation and breakup of a single polycarbonate (PC) drop in a polyethylene (PE) matrix were studied at high temperatures under simple shear flow using a specially designed transparent Couette device. Two main breakup modes were observed: (a) erosion from the surface of the drop in the form of thin ribbons and streams of droplets and (b) drop elongation and drop breakup along the axis perpendicular to the velocity direction. This is the first time drop breakup mechanism (a), "erosion," has been visualized in polymer systems. The breakup occurs even when the viscosity ratio (ηr) is greater than 3.5, although it has been reported that breakup is impossible at these high viscosity ratios in Newtonian systems. The breakup of a polymer drop in a polymer matrix cannot be described by Capillary number and viscosity ratio only; it is also controlled by shear rate, temperature, elasticity and other polymer blending parameters. A pseudo first order decay model was used to describe the erosion phenomenon and it fits the experimental data well.
Persistent Identifierhttp://hdl.handle.net/10722/90973
ISSN
2015 Impact Factor: 1.719
2015 SCImago Journal Rankings: 0.560
References

 

DC FieldValueLanguage
dc.contributor.authorLin, Ben_HK
dc.contributor.authorSundararaj, Uen_HK
dc.contributor.authorMighri, Fen_HK
dc.contributor.authorHuneault, MAen_HK
dc.date.accessioned2010-09-17T10:11:09Z-
dc.date.available2010-09-17T10:11:09Z-
dc.date.issued2003en_HK
dc.identifier.citationPolymer Engineering and Science, 2003, v. 43 n. 4, p. 891-904en_HK
dc.identifier.issn0032-3888en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90973-
dc.description.abstractThe deformation and breakup of a single polycarbonate (PC) drop in a polyethylene (PE) matrix were studied at high temperatures under simple shear flow using a specially designed transparent Couette device. Two main breakup modes were observed: (a) erosion from the surface of the drop in the form of thin ribbons and streams of droplets and (b) drop elongation and drop breakup along the axis perpendicular to the velocity direction. This is the first time drop breakup mechanism (a), "erosion," has been visualized in polymer systems. The breakup occurs even when the viscosity ratio (ηr) is greater than 3.5, although it has been reported that breakup is impossible at these high viscosity ratios in Newtonian systems. The breakup of a polymer drop in a polymer matrix cannot be described by Capillary number and viscosity ratio only; it is also controlled by shear rate, temperature, elasticity and other polymer blending parameters. A pseudo first order decay model was used to describe the erosion phenomenon and it fits the experimental data well.en_HK
dc.languageengen_HK
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.4spe.org/periodicals/journals/pes.htmen_HK
dc.relation.ispartofPolymer Engineering and Scienceen_HK
dc.subjectDeformationen_HK
dc.subjectDifferential Scanning Calorimetryen_HK
dc.subjectDrop Breakupen_HK
dc.subjectErosionen_HK
dc.subjectFlow Visualizationen_HK
dc.subjectHigh Temperature Effectsen_HK
dc.subjectLeast Squares Approximationsen_HK
dc.subjectPolymer Blendsen_HK
dc.subjectRegression Analysisen_HK
dc.subjectShear Flowen_HK
dc.subjectViscosityen_HK
dc.subjectVortex Flowen_HK
dc.titleErosion and Breakup of Polymer Drops Under Simple Shear in High Viscosity Ratio Systemsen_HK
dc.typeArticleen_HK
dc.identifier.emailLin, B:blin@hku.hken_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0042971349en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0042971349&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume43en_HK
dc.identifier.issue4en_HK
dc.identifier.spage891en_HK
dc.identifier.epage904en_HK

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