Accession Number : AD0702753
Title : THE GLASS TRANSITIONS OF ALIPHATIC IONENES.
Descriptive Note : Technical rept.,
Corporate Author : MCGILL UNIV MONTREAL (QUEBEC)
Personal Author(s) : Eisenberg,A. ; Matsuura,H. ; Yokoyama,T.
Report Date : 20 MAR 1970
Pagination or Media Count : 25
Abstract : The glass transition temperatures of a wide range of ionenes have been studied as a function of the spacing of ions and the dielectric constant of the plasticizer. For solvents of a high dielectric constant the extrapolated glass transition of most ionenes has a value of ca. OC, while for plasticizers of a low dielectric constant the value centers around -80C. It is suggested that a conformational transition is responsible for this drastic change in the extrapolated Tg values. A q/a effect was also found, the slope of the Tg vs. q/a plot being 695, i.e. quite similar to that for the phosphates, silicates and acrylates. (Author)
Descriptors : (*POLYMERS, TRANSITION TEMPERATURE), (*AMMONIUM COMPOUNDS, POLYMERS), IONS, ALKANES, CANADA
Subject Categories : Plastics
Distribution Statement : APPROVED FOR PUBLIC RELEASE