AGGREGATION BEHAVIOR OF SULFONATED BUTYL RUBBER IONOMERS IN SOLUTION .1. ESR-SPECTRA ANALYSIS

Electron Spin Resonance (ESR) measurements on manganese-ionomers of su lfonated butyl rubber (Mn-SIIR) show that polar cosolvents such as alc ohols could solvate the ionic groups and then destroy ionic aggregatio n, The solvation would be weakened and the ionic aggregation increased as temperature increased, These are in agreement with the results fro m viscosity measurements of ionomer in mixed solvents, But the content of ionic groups in solution had no significant effect on the degree o f ionic aggregation.