Skip to main content Accessibility help
×
Home

Structure and Dose Effects on Ion Beam Modification of Polymers

  • G. R. Rao (a1) (a2), E. H. Lee (a1) and L. K. Mansur (a1)

Abstract

Polyethylene (PE), polypropylene (PP), polystyrene (PS) and polyethersulfone (PES) were implanted with 200 keV boron ions at three different doses. PS was also implanted with 100 keV boron. A nanoindentation technique and reciprocating sliding wear tests were used to characterize mechanical properties of the implanted polymers. The results showed that hardness increased with increasing dose as well as increasing energy. The percentage increase in hardness was reduced with increasing complexity of the side groups although absolute hardness values were higher. With increasing complexity of the main backbone, polymer chain, the percentage increase in hardness as well as numerical hardness values were lower. These effects were attributed to the relative contributions of cross-linking and chain scission which were viewed as competing processes. Wear tests showed that in general, a lower or intermediate implant dose yielded the best improvement in wear resistance. No specific trends were observed for relating friction coefficient values and improved wear resistance. The results indicate that wear is a complex phenomenon which has a sensitive dependence on hardness and elastic properties of the mating surfaces.

Copyright

References

Hide All
1. Lee, E. H., Lewis, M. B., Blau, P. J. and Mansur, L. K., J. Mater. Res., 6(3) (1991) 610628.
2. Reichmanis, Elsa, in The Effects of Radiation on High-Technology Polymers, edited by Reichmanis, Elsa and O'Donnell, J. H., ACS Symposium Series 381 (American Chemical Society, Washington D.C., 1989), p. 132.
3. Venkatesan, T., Calcagno, L., Elman, B. S. and Foti, G., in Ion Beam Modification of Insulators. edited by Mazzoldi, P. and Arnold, G. W., (Elsevier Publishers, New York, 1987), pp. 301379.
4. Fink, D., Muller, M., Chadderton, L. T., Cannington, P. H., Elliman, R. G. and McDonald, D. C., Nucl. Instrum. Meth. Phy. res., B32, 125129 (1988).
5. Lee, E. H., Rao, G. R. and Mansur, L. K., Submitted to J. Mater. Res.
6. Lewis, M. B., Allen, W. R., Buhl, R. A., Packán, N. H., Cook, S. W. and Mansur, L. K., Nucl. Instrum. and Methods in Physics Res., B43 243 (1989).
7. Oliver, W. C, MRS Bulletin, Sept/Oct 15 (1986).
8. Lee, E. H., Lee, Y-C., Oliver, W. C and Mansur, L. K., Submitted to J. Mater. Res.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed