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Article: Study on PET/PP microfibrillar composites. I. Morphological development in melt extrusion

TitleStudy on PET/PP microfibrillar composites. I. Morphological development in melt extrusion
Authors
KeywordsBlends
Extrusion
Morphology
Issue Date2003
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0021-8995/
Citation
Journal Of Applied Polymer Science, 2003, v. 88 n. 14, p. 3100-3109 How to Cite?
AbstractPoly(ethylene terephthalate)/polypropylene (PET/PP) blends of different compositions were extruded through a 2-mm capillary die using a corotating twin-screw extruder. The extrudates were cryogenically fractured and examined using scanning electron microscopy. The viscosity ratio of the constituent polymers alone was found not suitable for explaining the polymer blend morphology. At a PET concentration of 20%, the extrudate consists of three regions: The skin layer, about 10 μm thick, has a lower concentration of the dispersed PET phase than that of the overall concentration. The intermediate region, about 400 μm thick, has profuse PET fibers and some small PET particles. The central region, approximately 800 μm in diameter, contains mainly PET particles that are generally bigger. A low barrel temperature, low die temperature, and fast cooling rate helped to retain the fibers near the extrudate skin. Meanwhile, variation of the barrel temperature, die temperature, and cooling media did not affect the PET particle-size distribution significantly in the central region of the extrudate. A high screw speed and a high postextrusion drawing speed were very effective in producing fibers in the extrudates through elongation of the particles. At a PET concentration of 30%, coalescence of the PET phase was prevalent, leading to the formation of PET platelets near the extrudate skin and irregular PET networks in the central region of the extrudate.
Persistent Identifierhttp://hdl.handle.net/10722/156671
ISSN
2015 Impact Factor: 1.866
2015 SCImago Journal Rankings: 0.578
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLin, XDen_US
dc.contributor.authorCheung, WLen_US
dc.date.accessioned2012-08-08T08:43:28Z-
dc.date.available2012-08-08T08:43:28Z-
dc.date.issued2003en_US
dc.identifier.citationJournal Of Applied Polymer Science, 2003, v. 88 n. 14, p. 3100-3109en_US
dc.identifier.issn0021-8995en_US
dc.identifier.urihttp://hdl.handle.net/10722/156671-
dc.description.abstractPoly(ethylene terephthalate)/polypropylene (PET/PP) blends of different compositions were extruded through a 2-mm capillary die using a corotating twin-screw extruder. The extrudates were cryogenically fractured and examined using scanning electron microscopy. The viscosity ratio of the constituent polymers alone was found not suitable for explaining the polymer blend morphology. At a PET concentration of 20%, the extrudate consists of three regions: The skin layer, about 10 μm thick, has a lower concentration of the dispersed PET phase than that of the overall concentration. The intermediate region, about 400 μm thick, has profuse PET fibers and some small PET particles. The central region, approximately 800 μm in diameter, contains mainly PET particles that are generally bigger. A low barrel temperature, low die temperature, and fast cooling rate helped to retain the fibers near the extrudate skin. Meanwhile, variation of the barrel temperature, die temperature, and cooling media did not affect the PET particle-size distribution significantly in the central region of the extrudate. A high screw speed and a high postextrusion drawing speed were very effective in producing fibers in the extrudates through elongation of the particles. At a PET concentration of 30%, coalescence of the PET phase was prevalent, leading to the formation of PET platelets near the extrudate skin and irregular PET networks in the central region of the extrudate.en_US
dc.languageengen_US
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0021-8995/en_US
dc.relation.ispartofJournal of Applied Polymer Scienceen_US
dc.rightsJournal of Applied Polymer Science. Copyright © John Wiley & Sons, Inc.-
dc.subjectBlendsen_US
dc.subjectExtrusionen_US
dc.subjectMorphologyen_US
dc.titleStudy on PET/PP microfibrillar composites. I. Morphological development in melt extrusionen_US
dc.typeArticleen_US
dc.identifier.emailCheung, WL:wlcheung@hkucc.hku.hken_US
dc.identifier.authorityCheung, WL=rp00103en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/app.11979en_US
dc.identifier.scopuseid_2-s2.0-0038334948en_US
dc.identifier.hkuros88976-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0038334948&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume88en_US
dc.identifier.issue14en_US
dc.identifier.spage3100en_US
dc.identifier.epage3109en_US
dc.identifier.isiWOS:000182425400009-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLin, XD=36768282100en_US
dc.identifier.scopusauthoridCheung, WL=7202743084en_US

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