Accession Number : ADA187088

Title :   Investigation of the Rotation of Molecular Groups in Polymers of Methyl Acrylate and Vinyl Acetate by the Method of IR-Spectroscopy,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Trapeznikova, O N ; Belopol'skaya, T V

PDF Url : ADA187088

Report Date : 27 Aug 1987

Pagination or Media Count : 11

Abstract : Absorption spectra are given for polymethyl acrylate and polyvinyl acetate in the areas of C-O stretching vibrations, measured at 77 and 295 K. In the range of frequencies of 1100-1300/cm a wide intensive band of absorption is found, the contour of which changes with temperature. Following the separation of this band into components (there turned out to be six) and comparing the behavior of the individual components when the temperature is changed, a conclusion was made concerning the presence of polymethyl acrylate of rotational isomerism in the ester group. In polyvinyl acetate in the same range of frequencies there is one wide band of absorption, the contour of which does not change with a change of temperature.

Descriptors :   *ACETATES, *ESTERS, *METHACRYLATES, *POLYMERS, *VINYL PLASTICS, ABSORPTION, ABSORPTION SPECTRA, ACRYLATES, BROADBAND, FREQUENCY, MOLECULES, POLYMETHYL METHACRYLATE, ROTATION

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE