Rheological properties of high melt strength poly(ethylene terephthalate) formed by reactive extrusion

J. S. Forsythe; K. Cheah; D. R. Nisbet; R. K. Gupta; A. Lau; A. R. Donovan; M. S. O'Shea; G. Moad

doi:10.1002/app.23166

Rheological properties of high melt strength poly(ethylene terephthalate) formed by reactive extrusion

J. S. Forsythe^*, K. Cheah, D. R. Nisbet, R. K. Gupta, A. Lau, A. R. Donovan, M. S. O'Shea, G. Moad

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

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.

Original language	English
Pages (from-to)	3646-3652
Number of pages	7
Journal	Journal of Applied Polymer Science
Volume	100
Issue number	5
DOIs	https://doi.org/10.1002/app.23166
Publication status	Published - 5 Jun 2006
Externally published	Yes

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title = "Rheological properties of high melt strength poly(ethylene terephthalate) formed by reactive extrusion",

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.",

keywords = "Branching, Chain extension, PET, PMDA, Pentaerythritol, Poly(ethylene terephthalate), Reactive extrusion",

author = "Forsythe, {J. S.} and K. Cheah and Nisbet, {D. R.} and Gupta, {R. K.} and A. Lau and Donovan, {A. R.} and O'Shea, {M. S.} and G. Moad",

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AU - Forsythe, J. S.

AU - Cheah, K.

AU - Nisbet, D. R.

AU - Gupta, R. K.

AU - Lau, A.

AU - Donovan, A. R.

AU - O'Shea, M. S.

AU - Moad, G.

PY - 2006/6/5

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AB - 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.

KW - Branching

KW - Chain extension

KW - PET

KW - PMDA

KW - Pentaerythritol

KW - Poly(ethylene terephthalate)

KW - Reactive extrusion

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JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

IS - 5

ER -

Rheological properties of high melt strength poly(ethylene terephthalate) formed by reactive extrusion

Abstract

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