NMR measurements of gaseous sulfur hexafluoride (SF 6 ) to probe the cross‐linking of EPDM rubber | Zendy

Terekhov M. | Zendy; Neutzler S. | Zendy; Aluas M. | Zendy; Hoepfel D. | Zendy; Oellrich L. R. | Zendy

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NMR measurements of gaseous sulfur hexafluoride (SF 6 ) to probe the cross‐linking of EPDM rubber

Author(s) -

Terekhov M.,

Neutzler S.,

Aluas M.,

Hoepfel D.,

Oellrich L. R.

Publication year - 2005

Publication title -

magnetic resonance in chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.483

H-Index - 72

eISSN - 1097-458X

pISSN - 0749-1581

DOI - 10.1002/mrc.1648

Subject(s) - chemistry , sulfur hexafluoride , sorption , natural rubber , relaxation (psychology) , polymer chemistry , polymer , desorption , analytical chemistry (journal) , organic chemistry , psychology , social psychology , adsorption

The effects of embedding gaseous SF 6 into EPDM rubber were investigated using NMR methods. It was found that observed sorption and desorption processes follow the behavior of the dual mode sorption model. A strong correlation was found between EPDM cross‐linking and transversal relaxation time of embedded SF 6 . EPDM samples with different cross‐link densities, preliminarily determined by 1 H transversal relaxation using the Gotlib model and Litvinov's method, were investigated using embedded SF 6 . The sensitivity of the 19 F transversal relaxation rate of SF 6 to the EPDM cross‐link density variation was found to be at least 10 times higher than for 1 H in the polymer chain. First experiments on probing the swelling effects in EPDM due to its contact with polar liquids have been performed. Copyright © 2005 John Wiley & Sons, Ltd.

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