A rheology study of high-energy radiolysis of a semicrystalline ethylene-propylene copolymer containing DOP mobilizer

Corresponding Author

Mohammad Fuzail

Pakistan Institute of Nuclear Science and Technology, Applied Chemistry Division, P.O. Box 1482, Nilore, Islamabad, Pakistan

Was an IAEA fellow at the Department of Chemistry, University of Queensland, Australia, from April 1 to June 30, 2004.

Department of Chemistry, University of Queensland, Brisbane, Queensland 4702, Australia===Search for more papers by this author

David J. T. Hill,

Corresponding Author

David J. T. Hill

[email protected]

Department of Chemistry, University of Queensland, Brisbane, Queensland 4702, Australia

Department of Chemistry, University of Queensland, Brisbane, Queensland 4702, Australia===Search for more papers by this author

Yoosup Park,

Yoosup Park

Department of Chemical Engineering, University of Queensland, Brisbane, Queensland 4702, Australia

Search for more papers by this author

Peter Halley,

Peter Halley

Department of Chemical Engineering, University of Queensland, Brisbane, Queensland 4702, Australia

Search for more papers by this author

Mohammad Fuzail,

Corresponding Author

Mohammad Fuzail

Pakistan Institute of Nuclear Science and Technology, Applied Chemistry Division, P.O. Box 1482, Nilore, Islamabad, Pakistan

Was an IAEA fellow at the Department of Chemistry, University of Queensland, Australia, from April 1 to June 30, 2004.

Department of Chemistry, University of Queensland, Brisbane, Queensland 4702, Australia===Search for more papers by this author

David J. T. Hill,

Corresponding Author

David J. T. Hill

[email protected]

Department of Chemistry, University of Queensland, Brisbane, Queensland 4702, Australia

Department of Chemistry, University of Queensland, Brisbane, Queensland 4702, Australia===Search for more papers by this author

Yoosup Park,

Yoosup Park

Department of Chemical Engineering, University of Queensland, Brisbane, Queensland 4702, Australia

Search for more papers by this author

Peter Halley,

Peter Halley

Department of Chemical Engineering, University of Queensland, Brisbane, Queensland 4702, Australia

Search for more papers by this author

First published: 22 June 2006

https://doi.org/10.1002/app.24339

Citations: 4

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Abstract

The radiolysis of a poly(ethylene-co-propylene), Elpro grade P 750 J, marketed by Thai Polypropylene Co. Ltd. for the manufacture of medical goods, was investigated at ambient temperature and melt rheology measured. The roles of calcium stearate, blended with the Elpro as a processing aid, and dioctyl phthalate (DOP), added in various amounts as a radical scavenger, were assessed. Following radiolysis, G′ and the viscosity of the polymer melts at 453 K both decreased with increasing radiation dose, even when the mobilizer was present. The results indicated that although the DOP did scavenge radicals, it did not protect the polymer from net chain scission in a low-dose regimen. The value of (G_S − 4G_X) was approximately 0.6–0.7. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 3437–3441, 2006

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Volume101, Issue5

5 September 2006

Pages 3437-3441

A rheology study of high-energy radiolysis of a semicrystalline ethylene-propylene copolymer containing DOP mobilizer

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A rheology study of high-energy radiolysis of a semicrystalline ethylene-propylene copolymer containing DOP mobilizer

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