In this report the results are summarized of measurements concerning the influence of intermolecular hydrogen bridge formation on the mechanisms responsible for the so-called p- and y-relaxations in the dielectric loss spectrum of nylon 6.6’) (see McCrum et al.’, p. 478497). To that end the loss spectra and the IR carbonyl absorptions in the range from 1 500 to 1 700 cm - were studied of polyester 6.6**)a nd of nylon 6.6, modified by partly substitution of amide-hydrogen by methyl or ethyl groups. This work is intended to give a contribution to the elucidation of the still existing controversy2- s, concerning the mechanisms mentioned above. Up till now, the idea of Woodward et aL6) of N-substitution as a tool in the interpretation of these secondary transitions in the dielectric loss spectrum of nylon 6.6, was not pursued further.
Bunk, A. J. H., Regtuit, H. G., van den Berg, J. W. A., Gaymans, R. J., & Schuyer, J. (1975). Dielectric loss of N-substituted nylon 6.6 and of polyester 6.6. Makromolekulare Chemie, 176(11), 3511-3515. https://doi.org/10.1002/macp.1975.021761134