Reinforcement orientation effects on the mechanical properties of micro/nanofibrillar composites and single polymer composites.

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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 en
dc.identifier.uri http://hdl.handle.net/2292/5729 en
dc.description Full text is available to authenticated members of The University of Auckland only. en
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. en
dc.publisher ResearchSpace@Auckland en
dc.relation.ispartof Master Thesis - University of Auckland en
dc.relation.isreferencedby UoA99212146914002091 en
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 en
dc.title Reinforcement orientation effects on the mechanical properties of micro/nanofibrillar composites and single polymer composites. en
dc.type Thesis en
thesis.degree.grantor The University of Auckland en
thesis.degree.level Masters en
dc.date.updated 2010-03-24T02:38:32Z en
dc.description.version Examination Version en
dc.rights.holder The author en


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