NMR investigation of gaseous SF6 confinement into EPDM rubber.
The confinement process of gaseous sulphurhexafluoride (SF6) in ethylene-propylene-diene (EPDM) rubber was investigated by spectroscopic and spatially resolved NMR techniques. A strong elongation of T1 relaxation time of SF6 and a decrease of the diffusion coefficient were found. A possible explanation may be the strong restriction of molecular mobility due to interactions between SF6 and active centers of the EPDM.
Neutzler
Sven
S
Institut für Technische Thermodynamik und Kältetechnik, Universität Karlsruhe (TH), 76128 Karlsruhe, Germany.
Terekhov
Maxim
M
Hoepfel
Dieter
D
Oellrich
Lothar Rainer
LR
D004058:Diffusion; D005740:Gases; D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D016062:Porosity; D012408:Rubber / Q000737:chemistry; D013459:Sulfur Hexafluoride / Q000737:chemistry*
D005740:Gases; D012408:Rubber; D013459:Sulfur Hexafluoride