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Article: Effect of single screw extrusion through a round die on the morphology of POM/PP blends

TitleEffect of single screw extrusion through a round die on the morphology of POM/PP blends
Authors
KeywordsExtrudate Morphology
Pom/Pp Blends
Issue Date1997
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jmatprotec
Citation
Journal Of Materials Processing Technology, 1997, v. 63 n. 1-3, p. 476-480 How to Cite?
AbstractPOM/PP blends of different compositions were extruded through a round die of 2 mm diameter using a single screw extruder. The morphology of the extrudates was studied using a polarized light microscope (PLM), a scanning electron microscope (SEM) and the solvent extraction technique A cable-like structure was observed in the extrudates, consisting of circular cords surrounded by a skin layer. The number and distribution of the cords matched with the holes on the breaker plate just before the die. The compositon and morphology of the cords were found to vary with the POM/PP composition ratio. For composition ratios between 10/90 and 40/60, the outer cords were rich in PP and only a small amount of POM fibres, particles or thin films were found. In contrast, the inner cords contained more POM fibres and they were distributed more evenly within the PP matrix In the 50/50 blend, both POM and PP fibres were present. In blends with more than 50% POM, the cords were made up of PP fibres in a continuous POM matrix. Cryogenically-fractured sections of the extrudates showed clean fibre/matrix interfaces under the SEM, this being a sign of poor adhesion between the polymers.
Persistent Identifierhttp://hdl.handle.net/10722/156451
ISSN
2015 Impact Factor: 2.359
2015 SCImago Journal Rankings: 1.464
References

 

DC FieldValueLanguage
dc.contributor.authorLin, XDen_US
dc.contributor.authorCheung, WLen_US
dc.date.accessioned2012-08-08T08:42:29Z-
dc.date.available2012-08-08T08:42:29Z-
dc.date.issued1997en_US
dc.identifier.citationJournal Of Materials Processing Technology, 1997, v. 63 n. 1-3, p. 476-480en_US
dc.identifier.issn0924-0136en_US
dc.identifier.urihttp://hdl.handle.net/10722/156451-
dc.description.abstractPOM/PP blends of different compositions were extruded through a round die of 2 mm diameter using a single screw extruder. The morphology of the extrudates was studied using a polarized light microscope (PLM), a scanning electron microscope (SEM) and the solvent extraction technique A cable-like structure was observed in the extrudates, consisting of circular cords surrounded by a skin layer. The number and distribution of the cords matched with the holes on the breaker plate just before the die. The compositon and morphology of the cords were found to vary with the POM/PP composition ratio. For composition ratios between 10/90 and 40/60, the outer cords were rich in PP and only a small amount of POM fibres, particles or thin films were found. In contrast, the inner cords contained more POM fibres and they were distributed more evenly within the PP matrix In the 50/50 blend, both POM and PP fibres were present. In blends with more than 50% POM, the cords were made up of PP fibres in a continuous POM matrix. Cryogenically-fractured sections of the extrudates showed clean fibre/matrix interfaces under the SEM, this being a sign of poor adhesion between the polymers.en_US
dc.languageengen_US
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/jmatprotecen_US
dc.relation.ispartofJournal of Materials Processing Technologyen_US
dc.subjectExtrudate Morphologyen_US
dc.subjectPom/Pp Blendsen_US
dc.titleEffect of single screw extrusion through a round die on the morphology of POM/PP blendsen_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.scopuseid_2-s2.0-0030733987en_US
dc.identifier.hkuros21270-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030733987&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume63en_US
dc.identifier.issue1-3en_US
dc.identifier.spage476en_US
dc.identifier.epage480en_US
dc.publisher.placeSwitzerlanden_US
dc.identifier.scopusauthoridLin, XD=36768282100en_US
dc.identifier.scopusauthoridCheung, WL=7202743084en_US

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