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Additive effects of lithium halides on the tensile and rheological properties of poly(methyl methacrylate)

Polymer Journal volume 54, pages 1279–1285 (2022)Cite this article

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Abstract

Lithium halides are easily dispersed in poly(methyl methacrylate) (PMMA) and lead to strong physical crosslinking with PMMA. We investigated the additional effects of various lithium halides, such as LiCl, LiBr, and LiI salts, on the rheological and mechanical properties of PMMA. The salts were homogeneously dispersed in the PMMA matrix, and the flow zone expanded owing to the pinning effects of the molten PMMA chains as the anion size increased. Furthermore, the brittleness of the PMMA solids doped with LiX (X = Cl, Br, and I) was analyzed using the Griffith theory, which suggested that the stress concentration around the salts in the PMMA matrix leads to the initiation of macroscopic fractures.

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Acknowledgements

The authors are grateful to Dr. H. Uchida, Institute of Science and Engineering, Kanazawa University, for experimental support.

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  1. Polymer Physics Laboratory, Institute of Science and Engineering, Kanazawa University, Kakuma Campus, Kanazawa, Ishikawa, 920-1192, Japan

    Asae Ito, Arisa Shin & Koh-hei Nitta

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  1. Asae Ito
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  2. Arisa Shin
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  3. Koh-hei Nitta
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Correspondence to Asae Ito.

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Ito, A., Shin, A. & Nitta, Kh. Additive effects of lithium halides on the tensile and rheological properties of poly(methyl methacrylate). Polym J 54, 1279–1285 (2022). https://doi.org/10.1038/s41428-022-00691-3

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