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FTIR spectra of plasticized high molecular weight PVC–LiCF3SO3 electrolytes

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Abstract

Fourier transform infrared spectroscopy studies have been conducted to investigate the interaction among components in a system of high molecular weight polyvinylchloride (PVC)–lithium trifluoromethanesulfonate (LiCF3SO3) incorporated with different type of plasticizers, namely, ethylene carbonate (EC), propylene carbonate (PC), and dibutylphthalate (DBP). Interaction between PVC and LiCF3SO3 was confirmed by C–H rocking mode at 1,255 cm−1 for PVC shift to 1,252 cm−1 in PVC–LiCF3SO3. The plasticizers’ carbonyl (C=O) oxygen atom which carries lone pair electrons interact with Li+ of LiCF3SO3 and methine hydrogen of PVC in LiCF3SO3–plasticizer system and PVC–plasticizer system, respectively. Changes in peaks assigned to 1,264 cm−1 (ν as(SO3)), 1,033 cm−1 (ν s(SO3)), 1,181 cm−1 (ν as(CF3)), 1,230 cm−1 (ν s(CF3)), 765 cm−1 (δ s(CF3)), 644 cm−1 (δ s(SO3)), 578 cm−1 (δ as(CF3)), and 519 cm−1 (δ as(SO3)) indicate the occurrence of complexation in the PVC–LiCF3SO3 system, LiCF3SO3–plasticizer system, and PVC–LiCF3SO3–plasticizer system.

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Authors and Affiliations

  1. Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Setapak, 53300, Kuala Lumpur, Malaysia

    S. Ramesh & Lim Jing Yi

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  1. S. Ramesh
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  2. Lim Jing Yi
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Correspondence to S. Ramesh.

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Ramesh, S., Yi, L.J. FTIR spectra of plasticized high molecular weight PVC–LiCF3SO3 electrolytes. Ionics 15, 413–420 (2009). https://doi.org/10.1007/s11581-008-0279-z

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  • DOI: https://doi.org/10.1007/s11581-008-0279-z

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