J. Phys. IV France 7 (1997) C2-665-C2-666
Sulfur K-Edge XAS Study of Sulfidic Crosslinks in Vulcanised RubbersS. Paste1, V. Gotte1, C. Goulon-Ginet1, 2, A. Rogalev1, J. Goulon1, P. Georget3 and J. Marcilloux3
1 ESRF, BP. 220, 38043 Grenoble, France
2 Université Joseph Fourier, 38043 Grenoble, France
3 Centre de Recherche HUTCHINSON, BP. 31, 45120 Châlette-sur-Loing, France
This feasibility study allowed us to establish three main results : (i) With high quality XANES spectra, it becomes quite possible to resolve the characteristic σ*(S-S), π*(S-S) and σ*(S-C) resonances; (ii) The "undulator gap scan" technique can yield excellent EXAFS spectra at the sulfur K-edge over more than 1300 eV; (iii) S K-edge EXAFS spectra made it possible to discriminate between vulcanizates with variable amounts of sulfur crosslinks and zinc sulfide.
© EDP Sciences 1997