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Application of NMR cross‐polarization/modulus correlations to a series of polyurethane elastomers
Author(s) -
Marcinko J. J.,
Parker A. A.,
Rinaldi P. L.,
Ritchey W. M.
Publication year - 1994
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.1994.070511011
Subject(s) - elastomer , viscoelasticity , materials science , polyurethane , dynamic mechanical analysis , series (stratigraphy) , modulus , composite material , polarization (electrochemistry) , dynamic modulus , polymer science , polymer chemistry , chemistry , polymer , paleontology , biology
A structure/property relationship is developed between the dynamic storage modulus, E′ , and the cross‐polarization time constant T CH for a series of polyurethane elastomers. The correlations made are based on the standard linear solids model (SLSM) and on the concept that T CH is modulated by near static molecular motions. The use of the SLSM to describe the main viscoelastic range of these polyurethanes is contrasted to previous models used to develop similar correlations. © 1994 John Wiley & Sons, Inc.