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Session M33 - Poster Session IV.
POSTER session, Wednesday morning, March 20
Exhibit Hall, Indiana Convention Center

[M33.016] Qualitative and quantitative comparison of local chemical composition, aggregate shapes, sizes, and spatial distribution in Na- and Zn-neutralized poly(ethylene-ran-methacrylic acid) ionomers

Andreas Taubert (Dept. of Materials Science and Engineering, Univ. of Pennsylvania), Karen I. Winey (Dept. of Materials Science and Engineering, Univ. of PennsylvaniaDept. of Materials Science and Engineering, Univ. of Pennsylvania)

We have previously shown by means of scanning transmission electron microscopy (STEM) that the shapes of ionic aggregates in ionomers are more diverse than previously anticipated. Here, we investigated the morphology and local chemical composition of Zn- and Na-neutralized poly(ethylene-ran-methacrylic acid) ionomers on a nanometer length scale. The current study seeks to quantitatively determine the zinc ion and the acid group (i.e. the oxygen) distribution in the ionic aggregates and the matrix. We also compare the aggregate shapes, sizes, size distributions, and spatial distributions in the Na- and the Zn-neutralized ionomers.

Part M of program listing