Comparative study on the degradation effects initiated by gamma ray and electron beam irradiation in polypropylene
The 2nd International Malaysia-Ireland Joint Symposium on Engineering, Science and Business 2012 (IMiEJS2012) jointly organized by Universiti Malaysia Perlis and Athlone Institute of Technology in collaboration with The Ministry of Higher Education (MOHE) Malaysia, Education Malaysia and Malay...
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Universiti Malaysia Perlis (UniMAP)
2013
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my.unimap-293472013-10-30T07:49:45Z Comparative study on the degradation effects initiated by gamma ray and electron beam irradiation in polypropylene Murray, Kieran A., Dr. Kennedy, James E. McEvoy, Brian Vrain, Olivier Ryan, Damien Cowman, Richard Higginbotham, Clement L. kmurray@research.ait.ie jkennedy@ait.ie Polypropylene Electron beam irradiation Gamma irradiation Chain scission Structural properties Surface properties Thermal properties The 2nd International Malaysia-Ireland Joint Symposium on Engineering, Science and Business 2012 (IMiEJS2012) jointly organized by Universiti Malaysia Perlis and Athlone Institute of Technology in collaboration with The Ministry of Higher Education (MOHE) Malaysia, Education Malaysia and Malaysia Postgraduates Student Association Ireland (MyPSI), 18th - 19th June 2012 at Putra World Trade Center (PWTC), Kuala Lumpur, Malaysia. The aim of this paper is to investigate the potential effects of gamma ray and electron beam irradiation, ranging between 25 and 200 kGy on unstabilised Polypropylene (PP). The PP samples were subjected to a range of characterisation techniques in order to identify any modifications to the material properties. Melt flow index (MFI) revealed that the melting strength and molecular weight of PP was significantly reduced with irradiation where the gamma irradiated samples were proven to be more affected. Fourier transform infrared spectroscopy (FTIR) demonstrated that gamma irradiation initiated more structural changes to occur in PP in contrast to electron beam irradiation. In addition, the gamma irradiated samples had extra oxidation groups present. Rheological studies evidently showed that the predominant phenomenon was chain scission in PP after electron beam and gamma irradiation. Although, the gamma ray process generated additional degradation effects in the material. Discolouration was quantified by utilising a colorimeter which determined that the gamma ray process produced more yellowing to transpire in the PP material at low irradiation doses (25 kGy). Finally, scanning electron microscope (SEM) identified that the surface morphology of the samples was much smoother subsequent to electron beam irradiation. 2013-10-30T07:49:44Z 2013-10-30T07:49:44Z 2012-06-18 Working Paper p. 184-196 978-967-5760-11-2 http://hdl.handle.net/123456789/29347 en Proceedings of the 2nd International Malaysia-Ireland Joint Symposium on Engineering, Science and Business 2012 (IMiEJS2012); Universiti Malaysia Perlis (UniMAP) |
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English |
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Polypropylene Electron beam irradiation Gamma irradiation Chain scission Structural properties Surface properties Thermal properties |
| spellingShingle |
Polypropylene Electron beam irradiation Gamma irradiation Chain scission Structural properties Surface properties Thermal properties Murray, Kieran A., Dr. Kennedy, James E. McEvoy, Brian Vrain, Olivier Ryan, Damien Cowman, Richard Higginbotham, Clement L. Comparative study on the degradation effects initiated by gamma ray and electron beam irradiation in polypropylene |
| description |
The 2nd
International Malaysia-Ireland Joint
Symposium on Engineering, Science and Business 2012 (IMiEJS2012) jointly organized by Universiti Malaysia Perlis and Athlone Institute of Technology in collaboration with The Ministry of Higher Education (MOHE) Malaysia, Education Malaysia and Malaysia Postgraduates Student Association Ireland (MyPSI), 18th - 19th June 2012 at Putra World Trade Center (PWTC), Kuala Lumpur, Malaysia. |
| author2 |
kmurray@research.ait.ie |
| author_facet |
kmurray@research.ait.ie Murray, Kieran A., Dr. Kennedy, James E. McEvoy, Brian Vrain, Olivier Ryan, Damien Cowman, Richard Higginbotham, Clement L. |
| format |
Working Paper |
| author |
Murray, Kieran A., Dr. Kennedy, James E. McEvoy, Brian Vrain, Olivier Ryan, Damien Cowman, Richard Higginbotham, Clement L. |
| author_sort |
Murray, Kieran A., Dr. |
| title |
Comparative study on the degradation effects initiated by gamma ray and electron beam irradiation in polypropylene |
| title_short |
Comparative study on the degradation effects initiated by gamma ray and electron beam irradiation in polypropylene |
| title_full |
Comparative study on the degradation effects initiated by gamma ray and electron beam irradiation in polypropylene |
| title_fullStr |
Comparative study on the degradation effects initiated by gamma ray and electron beam irradiation in polypropylene |
| title_full_unstemmed |
Comparative study on the degradation effects initiated by gamma ray and electron beam irradiation in polypropylene |
| title_sort |
comparative study on the degradation effects initiated by gamma ray and electron beam irradiation in polypropylene |
| publisher |
Universiti Malaysia Perlis (UniMAP) |
| publishDate |
2013 |
| url |
http://dspace.unimap.edu.my/xmlui/handle/123456789/29347 |
| _version_ |
1643795574334423040 |