Dynamics of novel polybutadiene ionomers

Abstract

The dynamics of novel ionomers based on a lowmolecular-weight polybutadiene with zinc acrylate moieties were investigated as a function of the number of ionic bonds by using a combination of calorimetry, dielectric broadband spectroscopy and rheology. We find that the ionic bonds have profound effects on the mechanical properties, including the introduction of a sol-gel transition. However, all techniques consistently indicate that the segmental dynamics of the polymer chains remain largely unaffected, and only very small changes in the glass transition were observed.

A comprehensive review of the structures and properties of ionic polymeric materials

“…Note that charge delocalization stabilizes ionic clusters, thus locally strengthening electrostatic forces within these nanodomains. 65 Like polyelectrolytes, the architecture of ionomers strongly affects the morphology and therefore ionic interaction strength. 66 Ionic cluster structures (discrete or percolated) and shapes (globular, spherical, or disk) can be tuned depending…”