IR spectroscopy study of excited chemical bonds in polyethylene macromolecules

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机构：
[1] Vettegren', V.I.
[2] Gabaraeva, A.D.
[3] Zaalishvili, N.L.
来源：
Vettegren', V.I. (Victor.Vettgren@pop.ioffe.rssi.ru) | 2001年 / MAIK Nauka卷 / 43期
关键词：
Chemical bonds - Conformations - Infrared spectroscopy - Macromolecules;
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摘要：
Shifts of a weak peak at the low-frequency wing of the 720-730 cm-1 doublet of the IR absorption spectra of PE caused by changes in temperature and stress were studied. The peak was attributed to rocking vibrations of the CH2 groups in excited GYm>4G segments. The dependence of the strain of such segments on the temperature and stress was examined.
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