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Rheological and mechanical properties of poly(methyl methacrylate) doped with lithium salts

Abstract

In this study, we compared the effects of adding two salts with different carbon chain lengths––LiCF3SO3 (lithium trifluoromethanesulfonate; LFMS) and LiC4F9SO3 (lithium nonafluorobutanesulfonate; LFBS)––on the uniaxial tensile properties of poly(methyl methacrylate) (PMMA). The samples were broken in a brittle fashion according to the salt concentration. The decrease in the entanglement density estimated from the viscoelastic properties and the longer average relaxation times in the flow region in the PMMA-salt systems indicate that the salts have a “pinning” effect on PMMA chains, causing them to be brittle, and the PMMA chains tend to be disentangled. This pinning effect was more pronounced for the LFMS sample with a shorter carbon chain length. The tensile toughness of the LFMS sample (with a shorter carbon chain length) was slightly reduced. Doping with LFMS enhanced ductility, indicating that the stronger pinning effect between the PMMA chains effectively modified brittle fracture. We found that the rheological behavior at the compression-molding temperature affects the brittle fracture behavior in tension.

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References

  1. Meyer WH. Polymer electrolytes for lithium-ion batteries. Adv Mater. 1998;10:439–48.

    Article  CAS  Google Scholar 

  2. Fenton DE, Parker JM, Wright PV. Complexes of alkali metal ions with poly(ethylene oxide). Polymer. 1973;14:589.

    Article  CAS  Google Scholar 

  3. Armand M. Polymer solid electrolytes - an overview. Solid State Ion. 1983;9–10:745–54.

    Article  Google Scholar 

  4. Agnihotry SA, Pradeep P, Sekhon SS. PMMA based gel electrolyte for EC smart windows. Electrochim Acta. 1999;44:3121–6.

    Article  CAS  Google Scholar 

  5. TianKhoon L, Ataollahi N, Hassan NH, Ahmad A. Studies of porous solid polymeric electrolytes based on poly (vinylidene fluoride) and poly (methyl methacrylate) grafted natural rubber for applications in electrochemical devices. J Solid State Electrochem. 2016;20:203–13.

    Article  CAS  Google Scholar 

  6. Liang B, Tang S, Jiang Q, Chen C, Chen X, Li S, et al. Preparation and characterization of PEO-PMMA polymer composite electrolytes doped with nano-Al2O3. Electrochim Acta. 2015;169:334–41.

    Article  CAS  Google Scholar 

  7. Miyagawa A, Ayerdurai V, Nobukawa S, Yamaguchi M. Viscoelastic properties of poly(methyl methacrylate) with high glass transition temperature by lithium salt addition. J Polym Sci Part B Polym Phys. 2016;54:2388–94.

    Article  CAS  Google Scholar 

  8. Ito A, Phulkerd P, Ayerdurai V, Soga M, Courtoux A, Miyagawa A, et al. Enhancement of the glass transition temperature of poly(methyl methacrylate) by salt. Polym J. 2018;50:857–63.

    Article  CAS  Google Scholar 

  9. Ito A, Maeno R, Yamaguchi M. Control of optical and mechanical properties of poly(methyl methacrylate) by introducing lithium salt. Opt Mater. 2018;83:152–6.

    Article  CAS  Google Scholar 

  10. Tsugawa N, Ito A, Yamaguchi M. Effect of lithium salt addition on the structure and optical properties of PMMA/PVB blends. Polymer. 2018;146:242–28.

    Article  CAS  Google Scholar 

  11. Ito, A Effect of addition of lithium salts on properties of poly(methyl methacrylate). Dotoral Diss. 2019. http://hdl.handle.net/10119/15795.

  12. Wu S. Chain structure, phase morphology, and toughness relationships in polymers and blends. Polym Eng Sci. 1990;30:753–61.

    Article  CAS  Google Scholar 

  13. Wu S. Secondary relaxation, brittle-ductile transition temperature, and chain structure. J Appl Polym Sci. 1992;46:619–24.

    Article  CAS  Google Scholar 

  14. Tominaga Y, Izumi Y, Kwak GH, Asai S, Sumita M. Effect of supercritical carbon dioxide processing on ionic association and conduction in a crystalline poly(ethylene oxide)-LiCF3SO3 complex. Macromolecules. 2003;36:8766–72.

    Article  CAS  Google Scholar 

  15. Kwak GH, Tominaga Y, Asai S, Sumita M. Improvement of the ionic conductivity for amorphous polyether electrolytes using supercritical CO2 treatment technology. Electrochim Acta. 2003;48:1991–5.

    Article  CAS  Google Scholar 

  16. Ito A, Nitta K-H. Additive effects of lithium salts with various anionic species. Molecules. 2021;26:4096–5005.

    Article  CAS  Google Scholar 

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Correspondence to Koh-hei Nitta.

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Ito, A., Shin, A. & Nitta, Kh. Rheological and mechanical properties of poly(methyl methacrylate) doped with lithium salts. Polym J 54, 41–46 (2022). https://doi.org/10.1038/s41428-021-00558-z

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