The study on the conductivity of styrene-maleic anhydride copolymer electrolytes based on poly(ethylene glycol)400 and LiClO4 |
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Authors: | Shao-Ming Lee Cheng-Chien Wang |
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Affiliation: | a Department of Chemical Engineering, National Cheng-Kung University, Tainan 70148, Taiwan, ROC b Department of Chemical Engineering, Southern Taiwan University of Technology, Tainan 710, Taiwan, ROC |
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Abstract: | Polyelectrolytes, in this study were synthesized from styrene-maleic anhydride (SMA) copolymer, poly(ethylene glycol)400 (PEG400), and lithium perchlorate (LiClO4). Fourier transform infrared spectroscopy (FTIR), and magic angle spinning (MAS) solid-state NMR were used to monitor the interaction between Li+ ions and polymer. The results of FTIR and MAS solid-state NMR indicate the Li+ ions are preferentially coordinated to the ether oxygen of PEG. The Tg of the PEG segments in polyelectrolyte increases with LiClO4 concentration, as determined by differential scanning calorimetry (DSC), indicating that solubility of the Li+ ions in the host polymer increases with the PEG content. Impedance spectroscopy (IS) shows that the bulk conductivity of polyelectrolytes and the conductivity behavior obeys the Vogel-Tamman-Fulcher (VTF) equation. |
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Keywords: | Lithium perchlorate FTIR _method=retrieve& _eid=1-s2 0-S001346860400180X& _mathId=si5 gif& _pii=S001346860400180X& _issn=00134686& _acct=C000053510& _version=1& _userid=1524097& md5=6d1f4195f14dd20ca41555b277fb4870')" style="cursor:pointer " alt="Click to view the MathML source" title="Click to view the MathML source"> els-cdn com/content/image/1-s2 0-S001346860400180X-si5 MAS solid-state NMR" target="_blank">gif"> MAS solid-state NMR Conductivity VTF |
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