Accession Number : AD0708744
Title : DIELECTRIC AND RHEO-OPTICAL PROPERTIES OF SOME BROMINATED POLYETHYLENES.
Descriptive Note : Technical rept.,
Corporate Author : MASSACHUSETTS UNIV AMHERST POLYMER RESEARCH INST
Personal Author(s) : Phillips,Paul J. ; Stein,Richard S.
Report Date : JUN 1970
Pagination or Media Count : 21
Abstract : Dielectric and rheo-optical investigations have been carried out on various brominated polyethylene samples. The crystallinities are reduced somewhat, from 55% to 42%, and the melting point is depressed by 4C. Annealing causes no increase in crystallinity, but perfects the interior of the spherulites. Variations in the mechanical and dielectric dispersions on annealing are interpreted on the bases of the gamma relaxation occurring due to amorphous intracrystalline material and the bromine atoms being situated on folds and/or scillia. (Author)
Descriptors : (*POLYETHYLENE PLASTICS, DIELECTRIC PROPERTIES), (*HALOCARBON PLASTICS, DIELECTRIC PROPERTIES), BROMINE COMPOUNDS, X RAY DIFFRACTION, RELAXATION TIME, RHEOLOGY
Subject Categories : Physical Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE