dc.contributor.author |
McCardle, Ryan |
en |
dc.date.accessioned |
2010-03-24T02:38:32Z |
en |
dc.date.available |
2010-03-24T02:38:32Z |
en |
dc.date.issued |
2010-03-24 |
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dc.identifier.uri |
http://hdl.handle.net/2292/5729 |
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dc.description |
Full text is available to authenticated members of The University of Auckland only. |
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dc.description.abstract |
In-situ poly(ethylene terephthalate) (PET) micro brils were created by drawing a blend of
polypropylene (PP) and PET. These were used to create micro brillar polymer-polymer
composites (MFCs), and micro brillar single polymer composites (MF-SPCs) to compare
the e ect of di erent bril orientations on the mechanical properties.
The resulting composites showed excellent improvements in sti ness of 77% for uniaxial
MFCs, and 125% for uniaxial MF-SPCs, with the highest recorded modulus of 8.57
GPa for a uniaxial MF-SPC sample, approaching that of glass bre reinforced PET.
SEM observations con rmed that the brillar structure and excellent alignment was
maintained. The changes in the reinforcement e ect with orientation were very similar
to those predicted by the rule of mixtures for crossply, and chaotic in-plane samples.
Nano brillar polymer-polymer composites (NFCs) with di erent bril orientations were
also created from in-situ PET nano brils, with the intention of creating nano brillar
single polymer composites (NF-SPCs) with the same orientations for comparison. The
comparisons drawn between nano bril and micro bril reinforced composites leads to the
conclusion that, as expected nano brils o er superior reinforcement e ects, however their
orientation is more di cult to maintain through processing into NF-SPCs.
Comparisons were also drawn between the composites created in this study, and previous
work with MFCs, MF-SPCs, NFCs, and NF-SPCs. |
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dc.publisher |
ResearchSpace@Auckland |
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dc.relation.ispartof |
Master Thesis - University of Auckland |
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dc.relation.isreferencedby |
UoA99212146914002091 |
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dc.rights |
Restricted Item. Available to authenticated members of The University of Auckland. |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
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dc.title |
Reinforcement orientation effects on the mechanical properties of micro/nanofibrillar composites and single polymer composites. |
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dc.type |
Thesis |
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thesis.degree.grantor |
The University of Auckland |
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thesis.degree.level |
Masters |
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dc.date.updated |
2010-03-24T02:38:32Z |
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dc.description.version |
Examination Version |
en |
dc.rights.holder |
The author |
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dc.identifier.wikidata |
Q112883932 |
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