EXAFS analysis of the structure of ionomer microdomains

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Abstract
Extended x‐ray absorption fine‐structure (EXAFS) measurements were used to determine the near‐neighbor environment of the neutralizing cation in several ionomer system. The observed structure is compared to that existing in analogous low‐molecular‐weight crystalline salts. A wide variety in the degree of local order was observed between different systems even though all exhibit similar small‐angle x‐ray scattering curves indicating the existence of ionic microdomains.