Characterization of ionic conductivity, viscosity, density, and self-diffusion coefficient for binary mixtures of polyethyleneglycol (or polyethyleneimine) organic solvent with room temperature ionic liquid BMIBF4 (or BMIPF6)

Tzi Yi Wu, Hao Cheng Wang, Shyh-Gang Su, Shr Tusen Gung, Ming Wei Lin, Cheng bo Lin

研究成果: Article同行評審

58 引文 斯高帕斯(Scopus)

摘要

A mixture of polyethyleneglycol (PEG, Mw = 200, 300, 400) and polyethyleneimine (PEI, Mw = 423) with ionic liquids 1-butyl-3-methylimidazole tetrafluoroborate (BMIBF4) and 1-butyl-3-methylimidazolium hexafluorophosphate (BMIPF6) is used to investigate physical properties such as viscosity, density, and conductivity. Nuclear magnetic resonance is used to investigate the effects of solvent content (X = 0.05, 0.1, 0.2, 0.3, 0.4, 0.5) and temperature (303-338 K) on the self-diffusion coefficient, diffusion radius, dissociation and association degree, and transport number of IL cations and anions in the mixture. When the addition of PEG increases, the viscosity and conductivity of the ionic liquid/solvent mixture decrease significantly. The cluster formation decreases the number of conductive free ions; hence, the conductivity of the mixture decreases. The hydrodynamic radius and the aggregation become larger, and the transport number of BMI+ becomes smaller when PEG is mixed with BMIBF4 and BMIPF6. BMIBF4/PEG system possesses higher association degree, lower cationic transport number than that of BMIPF6/PEG system.

原文English
頁(從 - 到)315-325
頁數11
期刊Journal of the Taiwan Institute of Chemical Engineers
41
發行號3
DOIs
出版狀態Published - 2010 五月 1

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)

指紋

深入研究「Characterization of ionic conductivity, viscosity, density, and self-diffusion coefficient for binary mixtures of polyethyleneglycol (or polyethyleneimine) organic solvent with room temperature ionic liquid BMIBF<sub>4</sub> (or BMIPF<sub>6</sub>)」主題。共同形成了獨特的指紋。

引用此