Effects of temperature and dissolved LiClO 4 on the viscoelastic and dynamic properties of poly(ethylene oxide), (PEO) melts
DOI:
关键词: Melting point 、 Ethylene oxide 、 Polymer 、 Chemical engineering 、 Oxide 、 Brillouin zone 、 Electrolyte 、 Relaxation (NMR) 、 Atmospheric temperature range 、 Polymer chemistry 、 Materials science
摘要: The physical properties of poly(ethylene oxide) (PEO) melts and PEO/LiClO4 complexes are major importance for understanding the mechanism dynamics lithium-ion transport in polymer electrolytes. We used a fiber-optic coupled triple-pass Fabry-Perot interferometer to study Brillouin light scattering spectra PEO melt/LiClO4 solutions various salt concentrations temperature range from melting point up 140oC. report measured line-shifts line-widths. A relaxation process was identified gigahertz frequency studied detail. “mapping” frequency–temperature– concentration parameter space yields important information about local segment chain, which has direct effect on charge carriers electrolyte. Poly(ethylene
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