This paper describes the investigation of carbon-black filled EPDM by
means of (129)Xenon NMR spectroscopy. Unvulcanized elastomer EPDM was
filled with three types of commercial available carbon blacks, differi
ng in particle size and specific surface. Xe-129 NMR spectra indicate
that Xe atoms are absorbed in the mobile EPDM domains of both filled a
nd unfilled material, In addition, a resonance of Xe adsorbed in the b
ound rubber fraction has been detected. from the chemical shift and li
ne width of this resonance we conclude that the EPDM chains around the
carbon black particles have a strongly diminished mobility.