Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1249849 | Vibrational Spectroscopy | 2006 | 4 Pages |
Dynamic infrared linear dichroism (DIRLD) data have been collected as a function of strain modulation frequency in a simultaneous DIRLD-dynamic mechanical analysis experiment. The frequency range is limited, but the DIRLD data indicate some similarities to the temperature-dependent data. The frequency-dependent infrared data do not show the direct correlation with the mechanical data that was evident in the temperature-dependent study. However, the frequency-dependent infrared data do provide some molecular insight, with a similarity to the temperature-dependent results in the 1800–1320 cm−1 region, a quadrature signal increasing with increasing frequency in the 1320–1000 cm−1 region, and complex changes in the low wavenumber region that are interpreted as polymer chain responses as a function of frequency.