1956
DOI: 10.1063/1.1742963
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Infrared Spectra of High Polymers. II. Polyethylene

Abstract: The infrared spectrum of polyethylene has been obtained between about 3000 cm-1 and 70 em-I, polarization measurements on oriented specimens having been obtained to about 350 em-l. Assignments of the fundamentals are made with the help of a group theory analysis. The assignment of the controversial CH. wagging mode is discussed in detail and especially in terms of new evidence from the spectra of n-paraffins, both as single crystals and as polycrystalline aggregates. It is shown that this mode is to be assigne… Show more

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Cited by 456 publications
(198 citation statements)
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“…The absorption was found to be negligibly small across the entire spectroscopy window. The slow rise of the index and absorption spectra at higher THz frequencies can be attributed to the tail of the 16.3 THz band reported in [26]. At low frequencies the only exceptions to this featureless behavior are represented by the very weak and broad bands centered at 2.1 THz and 2.8 THz, reported previously and attributed to translational lattice modes, respectively along the b and a axis of the unit cell [5,27].…”
Section: Ldpe and Topas ®mentioning
confidence: 62%
See 1 more Smart Citation
“…The absorption was found to be negligibly small across the entire spectroscopy window. The slow rise of the index and absorption spectra at higher THz frequencies can be attributed to the tail of the 16.3 THz band reported in [26]. At low frequencies the only exceptions to this featureless behavior are represented by the very weak and broad bands centered at 2.1 THz and 2.8 THz, reported previously and attributed to translational lattice modes, respectively along the b and a axis of the unit cell [5,27].…”
Section: Ldpe and Topas ®mentioning
confidence: 62%
“…In contrast to previous studies performed using FTIR [26][27][28][29][31][32][33][34][35], THz TDS provides a unique access to both the real and the imaginary part of the dielectric function. Besides, unlike FTIR, THz TDS is an ultrafast technique which can be easily used in pump-probe arrangement, thus directly yielding the dynamics of the ultra-broadband THz response of material of interest under ultrafast illumination.…”
Section: Discussionmentioning
confidence: 94%
“…[29][30][31][32][33] More recently, theoretical studies on PE and its oligomers, based on quantum chemical modelling, appeared in the literature. [34][35][36] On these grounds, the assignment of the spectral features can be considered a well-established matter.…”
Section: The Ir Spectrum Of Polyethylene: a Short Reviewmentioning
confidence: 99%
“…FTIR spectra of LDPE, POS, and their composites are shown in can be related to the joint contribution of POS and PE (Coates, 2006;Krimm, Liang et Sutherland, 1956;Launer, 2013 …”
Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning
confidence: 99%