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Proceedings Paper

Raman mapping of plasma-treated and grafted polymer surfaces
Author(s): Peter Fredericks; Imelda Keen; Llewellyn Rintoul
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Paper Abstract

The grafting of polystyrene (PS) onto various polypropylene (PP) containing substrates, previously treated by exposure to a plasma, has been followed by Raman microspectroscopic mapping. The substrates consisted of either pure PP, or blends of PP and ethylene-propylene rubber (EPR). For exactly the same section of polymer surface, Raman spectra were obtained at 1 micrometers intervals for small sections of each substrate, the surface after plasma-treatment, and the surface after PS grafting. Typically, the size of the sections studied was 50 micrometers X 50 micrometers . Raman maps were constructed indicating the crystallinity variation across the surface, and also the distribution of the EPR component in the substrate, and after plasma treatment. Raman maps were also constructed to show the distribution of the PS at the surface after the grafting reaction. Grafting was found to be heterogeneous. The overall amount of grafted PS depended on the amount of EPR in the substrate. For a particular substrate, increased concentrations of grafted PS were correlated with positions on the surface which had higher EPR after plasma treatment.

Paper Details

Date Published: 31 October 2001
PDF: 8 pages
Proc. SPIE 4469, Raman Spectroscopy and Light Scattering Technologies in Materials Science, (31 October 2001); doi: 10.1117/12.447372
Show Author Affiliations
Peter Fredericks, Queensland Univ. of Technology (Australia)
Imelda Keen, Queensland Univ. of Technology (Australia)
Llewellyn Rintoul, Queensland Univ. of Technology (Australia)

Published in SPIE Proceedings Vol. 4469:
Raman Spectroscopy and Light Scattering Technologies in Materials Science
David L. Andrews, Editor(s)

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