The effect of the length of the oxyethylene chain on the conductivity of the polyurethaneurea electrolyte
作者： Shao-Ming Lee , Chuh-Yung Chen , Cheng-Chien Wang
DOI: 10.1016/J.ELECTACTA.2004.05.044
关键词: Analytical chemistry 、 Electrolyte 、 Conductivity 、 Chemistry 、 Polyelectrolyte 、 Ionic conductivity 、 Differential scanning calorimetry 、 Lithium perchlorate 、 Inorganic chemistry 、 Ethylene glycol 、 Fourier transform infrared spectroscopy
摘要: Abstract Polyurethaneureas (PUU), which were synthesized from 4,4′-diphenylmethane diisocyanate (MDI), poly(ethylene glycol) (PEG), and 3,5-diaminobanzoic acid (DABA), used as polyelectrolytes in this study. Differential scanning calorimetry (DSC) Fourier transform infrared spectroscopy (FT-IR) to monitor the effect of various kinds PEG on changes morphology PUU electrolytes corresponding concentration lithium perchlorate (LiClO 4 ) dopants. The results DSC FT-IR indicate Li + ions coordinate with soft hard segments. Additionally, crystallinity segment ordered hydrogen-bonded urea carbonyl groups decreased increasing salt concentration. Impedance (IS) measurements show that electrolyte high phase separation degree has ionic conductivity. hard-segment T g soft-segment m influence conductivity behavior measurement temperature.
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