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Article: Melt mixing of polycarbonate with multi-walled carbon nanotubes in miniature mixers

TitleMelt mixing of polycarbonate with multi-walled carbon nanotubes in miniature mixers
Authors
KeywordsCarbon Nanotubes
Melt Mixing
Miniature Mixers
Nanocomposites
Polycarbonates
Issue Date2006
PublisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0003-3146/
Citation
Macromolecular Materials and Engineering, 2006, v. 291 n. 3, p. 227-238 How to Cite?
AbstractMWNT mixtures with PC were prepared in three different miniature mixers at 265°C and 50 rpm for 6 min by the master batch dilution method. One mixer is a 4.5 cm3 DACA microcompounder (DACA Instruments) consisting of two conical co-rotating screws with a bypass, allowing the material to circulate for defined periods. The other two miniature mixers are custom-built in our lab: the 2.2 cm3 APAM and the 3 cm3 MBM. The volume resistivity for the nanocomposites obtained from the APAM and the MBM showed a similar trend for different MWNT compositions. The electrical percolation concentration for the nanocomposites prepared in the APAM and the MBM is between 0.50 wt.-% (or 0.34 vol.-%) and 0.75 wt.-% (or 0.52 vol.-%) MWNT, and it is between 0.75 wt.-% (or 0.52 vol.-%) and 1.00 wt.-% (or 0.69 vol.-%) for the DACA microcompounder. Rheological characterization indicates that the microstructure of PC/MWNT composites prepared from the miniature mixers changes at a concentration of 0.38 wt.-% for the APAM and the MBM and 0.50 wt.-% for the DACA where an interconnected network is formed. TEM micrographs show that there are some small aggregates in the nanocomposites obtained from the APAM, fewer aggregates from the MBM, and least from the DACA. AFM analysis suggests that the length of nanotubes is reduced from 0.57 μm to 0.38-0.42 μm after they were melt mixed in the three mixers. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA.
Persistent Identifierhttp://hdl.handle.net/10722/90936
ISSN
2015 Impact Factor: 2.834
2015 SCImago Journal Rankings: 0.865
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLin, Ben_HK
dc.contributor.authorSundararaj, Uen_HK
dc.contributor.authorPötschke, Pen_HK
dc.date.accessioned2010-09-17T10:10:36Z-
dc.date.available2010-09-17T10:10:36Z-
dc.date.issued2006en_HK
dc.identifier.citationMacromolecular Materials and Engineering, 2006, v. 291 n. 3, p. 227-238en_HK
dc.identifier.issn1438-7492en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90936-
dc.description.abstractMWNT mixtures with PC were prepared in three different miniature mixers at 265°C and 50 rpm for 6 min by the master batch dilution method. One mixer is a 4.5 cm3 DACA microcompounder (DACA Instruments) consisting of two conical co-rotating screws with a bypass, allowing the material to circulate for defined periods. The other two miniature mixers are custom-built in our lab: the 2.2 cm3 APAM and the 3 cm3 MBM. The volume resistivity for the nanocomposites obtained from the APAM and the MBM showed a similar trend for different MWNT compositions. The electrical percolation concentration for the nanocomposites prepared in the APAM and the MBM is between 0.50 wt.-% (or 0.34 vol.-%) and 0.75 wt.-% (or 0.52 vol.-%) MWNT, and it is between 0.75 wt.-% (or 0.52 vol.-%) and 1.00 wt.-% (or 0.69 vol.-%) for the DACA microcompounder. Rheological characterization indicates that the microstructure of PC/MWNT composites prepared from the miniature mixers changes at a concentration of 0.38 wt.-% for the APAM and the MBM and 0.50 wt.-% for the DACA where an interconnected network is formed. TEM micrographs show that there are some small aggregates in the nanocomposites obtained from the APAM, fewer aggregates from the MBM, and least from the DACA. AFM analysis suggests that the length of nanotubes is reduced from 0.57 μm to 0.38-0.42 μm after they were melt mixed in the three mixers. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA.en_HK
dc.languageengen_HK
dc.publisherWiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0003-3146/en_HK
dc.relation.ispartofMacromolecular Materials and Engineeringen_HK
dc.subjectCarbon Nanotubesen_HK
dc.subjectMelt Mixingen_HK
dc.subjectMiniature Mixersen_HK
dc.subjectNanocompositesen_HK
dc.subjectPolycarbonatesen_HK
dc.titleMelt mixing of polycarbonate with multi-walled carbon nanotubes in miniature mixersen_HK
dc.typeArticleen_HK
dc.identifier.emailLin, B:blin@hku.hken_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/mame.200500335en_HK
dc.identifier.scopuseid_2-s2.0-33845596470en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33845596470&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume291en_HK
dc.identifier.issue3en_HK
dc.identifier.spage227en_HK
dc.identifier.epage238en_HK
dc.identifier.eissn1439-2054-
dc.identifier.isiWOS:000236279900004-

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