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

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Date

2006

Authors

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

Journal Title

Journal ISSN

Volume Title

Publisher

John Wiley & Sons Inc

Abstract

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 the melt. These results are consistent with the formation of a hyperbranched polyester with long chain branches.

Description

Keywords

Keywords: Alcohols; Extrusion; Polyesters; Rheology; Viscosity; Chain extension; Pentaerythritol; Reactive extrusion; Polyethylene terephthalates; extrusion; polyester; polyethylene terephthalate; strength; viscosity Branching; Chain extension; Pentaerythritol; PET; PMDA; Poly(ethylene terephthalate); Reactive extrusion

Citation

URI

http://hdl.handle.net/1885/63981

Collections

ANU Research Publications

Source

Journal of Applied Polymer Science

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1002/app.23166

Restricted until

2037-12-31

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01_Forsythe_Rheological_Properties_of_High_2006.pdf (105.27 KB)

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