Document Type
Journal Article
Publication Date
3-27-2023
Publication Title
Polymer
Department
Chemistry
College/School
Jesse D. Jones College of Science, Engineering and Technology
Abstract
Perarylated phosphonium salts are known to exhibit high degrees of thermal stability, often in excess of 400 °C. Here, the thermal and conductive properties of a series of perarylated phosphonium ionenes, prepared utilizing a PAEK-/PES-like synthetic approach, is described. All of the ionenes were found to display Td5% values in excess of 365 °C. Structural changes in the polymer backbone were found to have a prominent impact on Tg, with the meta-analogs exhibiting values ∼45 °C below the para-analogs, emphasizing the significant impact that solid-state packing can have on thermal transitions. All of the phosphonium ionenes were found to be resistant to decomposition under caustic conditions (NaOH), even at elevated temperature (60 °C) over a period of 48 h. Ionic conductivities were on the order of ∼10−7 S/cm at 120 °C, with the meta-analogs exhibiting a 1-2 orders-of-magnitude enhancement compared to their para-analogs, indicating that disruption of chain packing can lead to improvements in ionic conductivity while maintaining relatively high thermal and chemical resistance.
Recommended Citation
Sims, S. M., Brown, H., Hunter, J. R., Johnson, R. D., Whittaker, R. E., & Miller, K. M. (2023). PAEK-and PES-like perarylated phosphonium ionenes: Synthesis, thermal properties, and conductivity. Polymer, 270, 125793.
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Comments
This is an Accepted Manuscript of a peer-reviewed article published by Elsevier in Polymer, available at https://doi.org/10.1016/j.polymer.2023.125793