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Pulsed‐field gradient NMR measurements of diffusion of oil in rubber
Author(s) -
von Meerwall E.,
Ferguson R. D.
Publication year - 1979
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1979.070230322
Subject(s) - pulsed field gradient , diffusion , natural rubber , materials science , volume (thermodynamics) , analytical chemistry (journal) , fujita scale , thermodynamics , nuclear magnetic resonance , chemistry , composite material , organic chemistry , physics , meteorology
The pulsed‐gradient NMR method of Stejskal and Tanner was used to measure the diffusion of oil in synthetic cis ‐polyisoprene. The diffusion encounters no barriers with spacings at least up to several μm and generally displays free‐volume behavior, obeying the WLF temperature dependence between −10°C and +130°C, and the Fujita‐Doolittle concentration dependence between 10 and 90 vol‐% oil.