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Article: Study on poly(ethylene terephthalate)/polypropylene microfibrillar composites. II. Solid-state drawing behavior

TitleStudy on poly(ethylene terephthalate)/polypropylene microfibrillar composites. II. Solid-state drawing behavior
Authors
KeywordsBlends
Drawing
Extrusion
Molecular Dynamics
Morphology
Issue Date2004
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, 2004, v. 93 n. 4, p. 1989-2000 How to Cite?
AbstractA (20/80) blend of polyethylene terephthalate)/polypropylene (PET/PP) was solid-state drawn to enhance the molecular orientation of the PET microfibers. Effects of drawing temperature (23-140°C) and drawing speed (max. 1000 mm/min) on the morphology and draw ratio of the blend were studied and discussed based on the drawing behaviors of the pure polymers. In cold drawing, there seemed to be a critical drawing speed below which the natural draw ratios of the polymers remained constant, but above which the draw ratios first decreased slightly because of suppression of molecular relaxation and then increased because of breakage of highly strained molecules and disintegration of lamellar crystals into finer mosaic blocks. Macroscopically, the pure PP and the PET/PP composite extru-dates gave similar draw ratios at the same speeds. SEM showed that the PET microfibers suffered a smaller elongation than the PP matrix and severe voiding occurred at the PET/PP interface. Furthermore, substantial fiber breakage occurred during cold drawing at speeds above 200 mm/ min. In comparison, drawing at 100°C caused no obvious interfacial voiding and fiber breakage. Furthermore, the natural draw ratio of the blend was lower than that of the pure PP extrudate, indicating that the PET microfibers had constrained the deformation of the PP matrix. © 2004 Wiley Periodicals, Inc.
Persistent Identifierhttp://hdl.handle.net/10722/156811
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.authorJia, Den_US
dc.contributor.authorLeung, FKPen_US
dc.contributor.authorCheung, WLen_US
dc.date.accessioned2012-08-08T08:44:04Z-
dc.date.available2012-08-08T08:44:04Z-
dc.date.issued2004en_US
dc.identifier.citationJournal Of Applied Polymer Science, 2004, v. 93 n. 4, p. 1989-2000en_US
dc.identifier.issn0021-8995en_US
dc.identifier.urihttp://hdl.handle.net/10722/156811-
dc.description.abstractA (20/80) blend of polyethylene terephthalate)/polypropylene (PET/PP) was solid-state drawn to enhance the molecular orientation of the PET microfibers. Effects of drawing temperature (23-140°C) and drawing speed (max. 1000 mm/min) on the morphology and draw ratio of the blend were studied and discussed based on the drawing behaviors of the pure polymers. In cold drawing, there seemed to be a critical drawing speed below which the natural draw ratios of the polymers remained constant, but above which the draw ratios first decreased slightly because of suppression of molecular relaxation and then increased because of breakage of highly strained molecules and disintegration of lamellar crystals into finer mosaic blocks. Macroscopically, the pure PP and the PET/PP composite extru-dates gave similar draw ratios at the same speeds. SEM showed that the PET microfibers suffered a smaller elongation than the PP matrix and severe voiding occurred at the PET/PP interface. Furthermore, substantial fiber breakage occurred during cold drawing at speeds above 200 mm/ min. In comparison, drawing at 100°C caused no obvious interfacial voiding and fiber breakage. Furthermore, the natural draw ratio of the blend was lower than that of the pure PP extrudate, indicating that the PET microfibers had constrained the deformation of the PP matrix. © 2004 Wiley Periodicals, Inc.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.subjectDrawingen_US
dc.subjectExtrusionen_US
dc.subjectMolecular Dynamicsen_US
dc.subjectMorphologyen_US
dc.titleStudy on poly(ethylene terephthalate)/polypropylene microfibrillar composites. II. Solid-state drawing behavioren_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.20618en_US
dc.identifier.scopuseid_2-s2.0-3142611226en_US
dc.identifier.hkuros88977-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-3142611226&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume93en_US
dc.identifier.issue4en_US
dc.identifier.spage1989en_US
dc.identifier.epage2000en_US
dc.identifier.isiWOS:000222481500065-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLin, XD=36768282100en_US
dc.identifier.scopusauthoridJia, D=7101755520en_US
dc.identifier.scopusauthoridLeung, FKP=36103829300en_US
dc.identifier.scopusauthoridCheung, WL=7202743084en_US

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