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Rheological Properties of High Melt Strength Poly(ethylene terephthalate) Formed by Reactive Extrusion

Forsythe, John S.; Cheal, K.; Nisbet, David; Gupta, R.K.; Lau, A.; Donovan, A.R.; O'Shea, M.S.; Moad, Graeme


A reactive extrusion process was developed improving the rheological properties of PET via the coaddition of a dianhydride and polyol. Specifically, the coaddition of pyromellitic dianhydride (PMDA) with pentaerythritol resulted in a gel-free polyester with superior melt strengths and viscosities compared to the addition of PMDA alone. The enhancement in rheological properties were dependent on the relative amounts of dianhydride and polyol with the resultant polyester structurally stable in...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Journal of Applied Polymer Science
DOI: 10.1002/app.23166


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