Elastomeric Ionomers

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Abstract
Ionomers are a class of materials which are emerging as important commercial polymers but yet have many intriguing scientific characteristics. Typically, ionomers consist of a low level of inorganic salt groups pendent to a polymer chain. For this article, we will consider ionomers to possess a maximum level of about 10 mol% ionic groups pendent to a hydrocarbon polymer chain. While this definition is somewhat arbitrary, it is one generally accepted in the polymer field. Unlike homogeneous polymer systems, the pendent ionic groups can interact to form ion-rich aggregates contained in the nonpolar polymer matrix. The resulting ionic interactions can have a major influence on polymer properties and applications which have made this area an extremely fertile one for research and development.

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