Review and Critical Analyses of Theories of Aggregation in Ionomers

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Abstract
In general, ionomers are ion-containing polymers [1] which, in contrast to the traditional ion-exchange resins [2], are usually rendered insoluble through the presence of crystalline do-mains. This review will be confined to a discussion of linear organic polymers having fixed ionic sidechains of exclusively either positive or negative charges, examples of which would include the ethylene-methacrylic acid copolymer salts, sulfonated polystyrene, and Nañon perfluorosulfonate salts. More complicated systems, such as those containing zwitterion moieties, polysalts, halato-telechelics, or polyether-salt complexes, will not be of interest herein.