Ryan L. Weber, Yuesheng Ye, Steven M. Banik, Yossef A. Elabd, Michael A. Hickner and Mahesh K. Mahanthappa Thermal and ion transport properties of hydrophilic and hydrophobic polymerized styrenic imidazolium ionic liquids Journal of Polymer Science Part B: Polymer Physics 49
Polymerized ionic liquids (PILs) have a wide range of potential applications in catalysis, nanomaterials synthesis, gas separation media, batteries, and fuel cells. The physical properties of a homologous series of hydrophilic poly(4-vinylbenzyl alkylimidazolium chloride) homopolymers and related hydrophobic PIL homopolymers are reported. The hydrophilic PILs exhibit high ionic conductivities (σ ≈ 10−6 – 10−2 S cm−1) that depend on the relative humidity, whereas the ionic conductivities of the hydrophobic PILs (σ ≈ 10−7 – 10−3 S cm−1) depend predominantly on polymer segmental motion.
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