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| DMF－DMSO混合溶剂中多硫离子化学平衡的研究 | |
| 引用本文： | 谢乃贤,黄义祥,谢斌,关旭,冯金桥. DMF－DMSO混合溶剂中多硫离子化学平衡的研究[J]. 湖南大学学报(自然科学版), 1994, 21(2) |
| 作者姓名： | 谢乃贤 黄义祥 谢斌 关旭 冯金桥 |
| 作者单位： | 湖南省化学工业设计院 |
| 摘 要： | 采用分光光度法研究在二甲基甲酰胺（ＤＭＦ）和二甲亚砜（ＤＭＳＯ）混合溶剂中的多硫离子平衡表明，无论在Ｚ＝２或８／３的溶液中，当表现浓度减小时，都有利于多硫离子的降解。并且溶液中多硫离子之间的化学平衡，都随混合溶剂的组成变化，也即和介电常数有关．低介电常数有利于低聚合度的多硫自由基离子的存在． |
| 关 键 词： | 多硫离子，化学平衡，混合溶剂 |
Studies on Chemical Equilibriums of Polysulfide Ions in DMF-DMSO Mixed SOlvent |
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| Xie Naixian Huang Yixiang Xie Bin Guan Xu Feng Jinqiao. Studies on Chemical Equilibriums of Polysulfide Ions in DMF-DMSO Mixed SOlvent[J]. Journal of Hunan University(Naturnal Science), 1994, 21(2) | |
| Authors: | Xie Naixian Huang Yixiang Xie Bin Guan Xu Feng Jinqiao |
| Abstract: | s Studies on the equilibriums of polysulfide ions in DMF-DMSO mixedsolvent by spectrometric method have been made and it has been shown that the decom-position of polysulfide ions is favourable when apparent concentrations are decreased ei-ther in the solution Z=2 or Z=8/3. Besides, the chemical equilibriums among polysul-fide ions vary with the composition of the mixed solvent,e.g.,with the dielectric con-stant of the solvent.A lower value of dielectric constant is favourable to the existence ofpolysulfide radical ions in a lower degree of polymerization. |
| Keywords: | polysulfide ions chemical equilibrium mixed solvent |
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