Raman intensities of stretch oriented polyethylene and perdeuteropolyethylene. I. Experiments

Abstract

Two papers (I and II) are published jointly on the experimental determination of Raman intensities and calculations of intensity parameters of stretch-oriented polyethylene and perdeuteropolyethylene in different scattering geometries and polarization directions. In Paper I the reasons of the work, the basic principles of the method and the experimental techniques are described and the integrated relative Raman intensities are reported. A comparison of the data in various geometries allows to judge the validity of the experimental data. The vibrational assignment based on experiments is verified as a background for the calculations of intensities which follow in Paper II.