Abstract
Dielectric relaxations in complex salts of Zn(II) salts of ethylene-methacrylic acid copolymer (E-MAA), MAA content 5.4 mol%, with 1,3-bisaminomethylcyclohexane (BAC) were studied in detail. In E-MAA and the Zn(II) salts, β′ and γ relaxations were observed around 320 and 190 K at 1 kHz, which are attributed to micro-Brownian molecular motion of long segments and local molecular motion of short segments. When BAC is added to the two polymers, the β′ relaxation was replaced by α and β relaxations. The α and β relaxations were related to a glass-rubber transition of ionic clusters and to molecular motion of isolated salts and carboxylic acid not incorporated into the ionic clusters, respectively. From the above results, it was concluded that BAC strongly promotes the formation of ionic clusters.
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