dc.contributor.author |
Edmonds, Neil |
en |
dc.contributor.author |
Plimmer, PN |
en |
dc.contributor.author |
Tanner, C |
en |
dc.contributor.editor |
Sadhan, CJ |
en |
dc.coverage.spatial |
Cleveland, Ohio, USA |
en |
dc.date.accessioned |
2015-11-05T01:51:16Z |
en |
dc.date.issued |
2015-05 |
en |
dc.identifier.citation |
The 30th International Conference of the Polymer Processing Society, Cleveland, Ohio, USA, 06 Jun 2014 - 12 Jun 2014. Editors: Sadhan CJ. AIP Conference Proceedings. American Institute of Physics (AIP). 1664: 090002-090002. May 2015 |
en |
dc.identifier.isbn |
978-0-7354-1309-2 |
en |
dc.identifier.issn |
1551-7616 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/27406 |
en |
dc.description.abstract |
A major problem associated with the commercial manufacture of thin films from PLA is inferior processing characteristics on blown film lines compared to low density polyethylene. PLA has poor melt strength (leading to bubble instability) and develops a permanent crease in the flattened film as it exits the tower of the film line. In addition, the thin film product has poor tear strength and an unacceptable ‘noise’ level when converted into flexible packaging. Furthermore, fabricated articles based on PLA are known to show an unattractive tendency toward dimensional instability. This behaviour is associated with ‘cold crystallization’, a phenomenon which also causes exudation of any plasticizer added for improving flexibility. Blow moulded articles based on PLA also exhibit dimensional sensitivity above 60°C. All of these issues have been overcome by the technology described in this paper. This has been accomplished without loss of the valuable compostability characteristic of PLA; this was confirmed by evaluation of film in a commercial composting operation. These results have been achieved through novel reactive compounding technology which: (a) Creates a PLA-rich structure containing long chain crosslinks, (b) generates a low glass transition temperature phase covalently bonded to the PLA structure, and (c) provides a material which performs like LDPE in a blown film manufacturing operation. The technology developed is covered by NZ Patent 580231 (3). The patent is held by UniServices Ltd, The University of Auckland, New Zealand. |
en |
dc.publisher |
American Institute of Physics (AIP) |
en |
dc.relation.ispartof |
The 30th International Conference of the Polymer Processing Society |
en |
dc.relation.ispartofseries |
AIP Conference Proceedings |
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://scitation.aip.org/termsconditions |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.title |
High Melt Strength, Tear Resistant Blown Film Based on Poly(lactic acid) |
en |
dc.type |
Conference Item |
en |
dc.identifier.doi |
10.1063/1.4918465 |
en |
pubs.begin-page |
090002 |
en |
pubs.volume |
1664 |
en |
dc.rights.holder |
Copyright:
American Institute of Physics (AIP) |
en |
pubs.author-url |
http://scitation.aip.org/content/aip/proceeding/aipcp/1664 |
en |
pubs.end-page |
090002 |
en |
pubs.finish-date |
2014-06-12 |
en |
pubs.start-date |
2014-06-06 |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Proceedings |
en |
pubs.elements-id |
502356 |
en |
pubs.record-created-at-source-date |
2015-10-22 |
en |