Rheology and processing of bloodmeal-based thermoplastics

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dc.contributor.author Mohan, Velram en
dc.contributor.author Verbeek, Casparus en
dc.date.accessioned 2016-01-08T01:49:25Z en
dc.date.available 2015-12-07 en
dc.date.issued 2015-12-12 en
dc.identifier.citation AIMS Materials Science, 2015, 2 (4), pp. 546 - 559 (14) en
dc.identifier.issn 2372-0468 en
dc.identifier.uri http://hdl.handle.net/2292/27915 en
dc.description.abstract The objective of this research was to determine the rheological properties and processing behaviour of NTP using capillary rheometry and batch mixing. These were evaluated at constant plasticiser content, but using three different ratios of water to plasticiser (triethylene glycol, TEG). Each of these was evaluated at 115, 120 and 125 ℃. It was shown that NTP is a non-Newtonian, shear thinning fluid. It was found that viscosity is highly dependent on water content; decreasing with increasing water content. At a shear rate of 15 s-1, the apparent viscosity for the reference formulation (60 parts water per hundred parts bloodmeal) was 2000 Pa.s compared to 7000 Pa.s for the formulation containing 30 parts water and 30 parts TEG (at 115 ℃). Viscosity decreased slightly with increasing temperature and the degree of non-Newtonian behaviour was mostly unaffected by temperature. The flow behaviour index, n, was found to be in the range 0.11 to 0.17, with no discernable temperature dependence. In the reference formulation, the total amount of plasticiser and ratio water to TEG was higher, which resulted in slightly different flow behaviour with respect to temperature. Batch mixing revealed that NTP crosslinks rapidly after about three minutes and was strongly dependent on temperature and mixing speed. en
dc.language English en
dc.publisher AIMS Press en
dc.relation.ispartofseries AIMS Materials Science en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from http://www.aimspress.com/about.html en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.rights.uri http://creativecommons.org/licenses/by/4.0/ en
dc.subject bioplastic en
dc.subject viscosity en
dc.subject rheology en
dc.subject processability en
dc.subject capillary rheometry en
dc.title Rheology and processing of bloodmeal-based thermoplastics en
dc.type Journal Article en
dc.identifier.doi 10.3934/matersci.2015.4.546 en
pubs.issue 4 en
pubs.begin-page 546 en
pubs.volume 2 en
dc.rights.holder Copyright: AIMS Press en
pubs.author-url http://www.aimspress.com/article/10.3934/matersci.2015.4.546 en
pubs.end-page 559 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 513091 en
pubs.org-id Engineering en
pubs.org-id Mechanical Engineering en
dc.identifier.eissn 2372-0484 en
pubs.record-created-at-source-date 2015-12-15 en

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