Dynamic Covalent Amphiphilic Polymer Conetworks Based on End-Linked Pluronic F108: Preparation, Characterization, and Evaluation as Matrices for Gel Polymer Electrolytes

Apostolides, Demetris E.;Michael, George;Patrickios, Costas S.;Notredame, Benoît;Papadakis, Christine M.;et.al.
(2024) ACS Applied Materials and Interfaces — Vol. 16, n° 18, p. 23813-23825 (2024)

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Authors
  • Apostolides, Demetris E.
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  • Michael, George
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  • Patrickios, Costas S.orcid-logo
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  • Notredame, BenoîtUCLouvain
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  • Zhang, YinghuiUCLouvain
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  • Gohy, Jean-Françoisorcid-logoUCLouvain
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  • Papadakis, Christine M.orcid-logo
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Abstract
We present the development of a platform of well-defined, dynamic covalent amphiphilic polymer conetworks (APCN) based on an α,ω-dibenzaldehyde end-functionalized linear amphiphilic poly(ethylene glycol)-b-poly(propylene glycol)-b-poly(ethylene glycol) (PEG-b-PPG-b-PEG, Pluronic) copolymer end-linked with a triacylhydrazide oligo(ethylene glycol) triarmed star cross-linker. The developed APCNs were characterized in terms of their rheological (increase in the storage modulus by a factor of 2 with increase in temperature from 10 to 50 °C), self-healing, self-assembling, and mechanical properties and evaluated as a matrix for gel polymer electrolytes (GPEs) in both the stretched and unstretched states. Our results show that water-loaded APCNs almost completely self-mend, self-organize at room temperature into a body-centered cubic structure with long-range order exhibiting an aggregation number of around 80, and display an exceptional room temperature stretchability of ∼2400%. Furthermore, ionic liquid-loaded APCNs could serve as gel polymer electrolytes (GPEs), displaying a substantial ion conductivity in the unstretched state, which was gradually reduced upon elongation up to a strain of 4, above which it gradually increased. Finally, it was found that recycled (dissolved and re-formed) ionic liquid-loaded APCNs could be reused as GPEs preserving 50–70% of their original ion conductivity.
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Apostolides, D. E., Michael, G., Patrickios, C. S., Notredame, B., Zhang, Y., Gohy, J.-F., Prévost, S., Gradzielski, M., Jung, F. A., & Papadakis, C. M. (2024). Dynamic Covalent Amphiphilic Polymer Conetworks Based on End-Linked Pluronic F108: Preparation, Characterization, and Evaluation as Matrices for Gel Polymer Electrolytes. ACS Applied Materials and Interfaces, 16(18), 23813-23825. https://doi.org/10.1021/acsami.3c19189 (Original work published 2024)