Polysulfones for conservation in the ethylene-polymer industry
The preparation of ethylene-SO/sub 2/ polysulfone copolymers by cobalt-60 gamma irradiation, as well as by chemical catalysis, as a means of incorporating a polluting waste material such as SO/sub 2/ into useful ethylene polymers and also for the purpose of conserving ethylene feedstock is described. The physical properties of the copolymer were determined, and it was found that the copolymer is soluble in ethylene diamine and its homologues, hot concentrated H/sub 2/SO/sub 4/, and cold 45% KOH. Also found was that it had no glass transition temperature, Tg, and no crystalline melting temperature, Tm, but had a decomposition temperature near 350/sup 0/C. The copolymer was pressure molded into discs at elevated temperatures, 150 to 200/sup 0/C, which had a high degree of hardness but were brittle and inhomogeneous (partly clear and partly cloudy). Sheets of the copolymer were also prepared by mixing the powdered copolymer with 4 to 5% Teflon powder on a hot tow-roll mill. The sheets thus prepared had low strength and were easily torn, but were somewhat porous and oil-absorbent. The addition of small quantities of a third monomer resulted in products containing copolymers of the modifying monomer. These modified polymers appeared soluble in common solvents. A summary of accomplishments, conclusions, and suggestions for future work are presented.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6777782
- Report Number(s):
- BNL-51353
- Country of Publication:
- United States
- Language:
- English
Similar Records
Polysulfones for conservation in the ethylene polymer industry. Progress report No. 8, April-June 1980. [. gamma. radiation, catalysis]
Polyketones and polysulfones for conservation in the ethylene polymer industry. Progress report No. 4, January-March 1979
Related Subjects
36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COPOLYMERS
CHEMICAL PREPARATION
PHYSICAL PROPERTIES
ETHYLENE
RESOURCE CONSERVATION
PLASTICS INDUSTRY
WASTE PRODUCT UTILIZATION
CATALYSIS
COBALT 60
GAMMA RADIATION
IRRADIATION
MATERIAL SUBSTITUTION
MONOMERS
SULFONES
SULFUR DIOXIDE
ALKENES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHALCOGENIDES
COBALT ISOTOPES
ELECTROMAGNETIC RADIATION
HYDROCARBONS
INDUSTRY
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYMERS
RADIATIONS
RADIOISOTOPES
SULFUR COMPOUNDS
SULFUR OXIDES
SYNTHESIS
YEARS LIVING RADIOISOTOPES
320304* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization
360404 - Materials- Polymers & Plastics- Physical Properties- (-1987)
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)