Effectiveness of DOP mobilizer on the radiolysis of a semi-crystalline ethylene–propylene copolymer

The role of dioctyl phthalate, DOP, added as a radiation stabilizer (mobilizer) to a commercial, medical grade polypropylene has been examined by FTIR and XPS analyses. It was found that the DOP degraded during γ-irradiation to a sterilization dose under vacuum at 298 K and that the degradation prod...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2007-12, Vol.265 (1), p.285-289
Main Authors: Fuzail, Mohammad, Hill, David J.T., Anwar, Jamil, Jahan, M. Shah, Rintoul, Llewellyn
Format: Article
Language:English
Subjects:
Dioctylphthalate
FTIR
Poly(ethylene-co-propylene)
XPS
γ-Radiation
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Summary:The role of dioctyl phthalate, DOP, added as a radiation stabilizer (mobilizer) to a commercial, medical grade polypropylene has been examined by FTIR and XPS analyses. It was found that the DOP degraded during γ-irradiation to a sterilization dose under vacuum at 298 K and that the degradation products, which included a variety of oxygenated and aromatic compounds, diffused to the polymer surface.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2007.08.060