Abstract
Ethylene-SO/sub 2/ polysulfone copolymers were prepared by /sup 60/Co gamma radiation, as well as by electron-beam radiation and by thermocatalysis, as a means of incorporating a polluting waste product material such as SO/sub 2/ into ethylene polymers for the purpose of conserving ethylene feedstock. Ethylene-SO/sub 2/ copolymer was pressure molded into discs which had a high degree of hardness as well as partial transparency, but were also very brittle. Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA) indicated peak decomposition at 350/sup 0/C. Long term heat aging tests showed stability to 175/sup 0/C and initiation of decomposition at 200/sup 0/C in air after 900 h. Decomposition became severe as the temperature was increased to 300/sup 0/C. The activation energies for decomposition were 57.3 and 56.8 kcal/mole for liquid-phase and gas-phase formed copolymers, respectively. The ethylene-SO/sub 2/ copolymer was modified by the incorporation of monomeric styrene, 2-vinyl pyridine, 4-vinyl pyridine, and N-vinyl pyrrolidine. A summary of characterization studies by INCO which includes solubility, infra-red and x-ray analysis of the ethylene-SO/sub 2/ copolymer and with additives are presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
