INFRARED SPECTRA OF POLYETHYLENE TEREPHTHALATE AND ITS DEUTERATED ISOMERS

Abstract

Through use of the deuterated isomers of polyethylene terephthalate, it has been possible to confirm most of the previous assignments, to answer a number of questions existing in previous works, and to obtain a more complete assignment of the infrared bands.It has been possible to assign the major and most of the minor bands of not only the normal polymer but also polyethyelene-$d_{4}$-terephthalate, polyethylene terephthalate-$d_{4}$, and polyethylene-$d_{4}$, terephthalate-$d_{4}$. The procedure used in carrying out the analysis was similar to that followed by Krimm, Liang and $Sutherland^{1}$ for polyethylene.