Journal
CELLULOSE
Volume 20, Issue 6, Pages 3227-3237Publisher
SPRINGER
DOI: 10.1007/s10570-013-0079-0
Keywords
Corn starch; BmImTf; Transference number; ATR-FTIR; TGA
Funding
- University of Malaya Research Grant (UMRG Program) [RP001-2013A]
- University of Malaya [J-21002-73851]
- Skim Bright Sparks Universiti Malaya (SBSUM)
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Biopolymer electrolytes containing corn starch, lithium hexafluorophosphate (LiPF6) and ionic liquid 1-butyl-3-methylimidazolium trifluoromethanesulfonate (BmImTf) were prepared by solution casting technique. The ionic conductivity was found to increase with increasing ionic liquid concentration. Upon doping with 80 wt% of BmImTf, the ionic conductivity increased by three orders of magnitude. The highest ionic conductivity of (3.21 +/- A 0.01) x 10(-4) S cm(-1) was achieved at ambient temperature. The complexation between corn starch, LiPF6 and BmImTf was further proven in attenuated total reflectance-Fourier transform infrared findings. The highest conducting biopolymer electrolyte was stable up to 230 A degrees C, as proven in thermogravimetric analysis.
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