کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1249849 | 970743 | 2006 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Dynamic mechanical analysis and dynamic infrared linear dichroism study of the frequency-dependent viscoelastic behavior of a poly(ester urethane) Dynamic mechanical analysis and dynamic infrared linear dichroism study of the frequency-dependent viscoelastic behavior of a poly(ester urethane)](/preview/png/1249849.png)
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.
Journal: Vibrational Spectroscopy - Volume 42, Issue 1, 18 October 2006, Pages 74–77