NMP 中 [Bmim][OAc]稀释溶液的体积和粘度特性以及 288.15 至 318.15 K 之间的溶液-溶剂相互作用

IF 1.4 4区 化学 Q4 CHEMISTRY, PHYSICAL Journal of Solution Chemistry Pub Date : 2024-07-08 DOI:10.1007/s10953-024-01387-3
Hongtao Wang, Haiyun Hou, Mengjiao Zhang, Junru Wang, Zhichao Xu, Renzhong Li, Songtao Liu
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引用次数: 0

摘要

[Bmim][OAc](1-丁基-3-甲基咪唑醋酸盐)与 NMP(N-甲基吡咯烷酮)的二元体系是一种潜在的有效纤维素溶剂,其理化性质和溶质-溶剂相互作用对于设计和了解其应用非常重要。理化性质可以推断一个体系的溶质-溶剂相互作用,尤其是在无限稀释的情况下;因此,在这项工作中,在摩尔数范围 0.0-2.1 mol-kg-1 和温度范围 288.15-318.15 K 的条件下,测量了[Bmim][OAc]在 NMP 中稀释溶液的密度和绝对粘度,并进行了相关分析。表观摩尔体积和相对粘度分别由 Redlich-Rosenfeld-Meyer 方程(包括参数 \(V_\Phi}^0\)、Av、Bv)和 Jones-Dole 方程(包括参数 D、F)计算并相关联。然后,根据参数 \(V_{\Phi}^0\)、Av、Bv、D、F 以及体积比 r、极限表观摩尔膨胀率 \(E_{\Phi}^0\)和溶解度数 ns 讨论了[Bmim][OAc]在溶液中的结构行为以及[Bmim][OAc]-NMP 的相互作用。结果表明,[Bmim][OAc]是溶液结构的制造者,[Bmim][OAc]-NMP 的相互作用弱于阳离子-阴离子和 NMP-NMP 的相互作用,而且这种作用随着温度的升高而越来越明显。最后,根据相互作用和广为接受的溶解假说,讨论了潜在纤维素溶剂溶解纤维素的可能较佳温度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Volumetric and Viscosity Properties for the Dilute Solution of [Bmim][OAc] in NMP and the Solute–Solvent Interaction from 288.15 to 318.15 K

The binary system of [Bmim][OAc] (1-butyl-3-methylimidazolium acetate) with NMP (N-methylpyrrolidone) is a potential effective cellulose solvent, and its physicochemical properties and solute–solvent interaction are important to design and understand its application. The physicochemical properties can infer the solute–solvent interaction of a system, especially for an infinite dilution; so, in this work, over the molality range 0.0–2.1 mol·kg−1 and temperature range 288.15–318.15 K, the density and absolute viscosity for the dilute solution of [Bmim][OAc] in NMP were measured and correlated. The apparent molar volume and the relative viscosity were calculated and correlated by Redlich–Rosenfeld–Meyer equation (including parameters \(V_{\Phi}^0\), Av, Bv) and Jones–Dole equation (including parameters D, F), respectively. Then, the structure behavior of [Bmim][OAc] on solution and the [Bmim][OAc]–NMP interaction were discussed based on the parameters \(V_{\Phi}^0\), Av, Bv, D, F, and the volume ratio r, limiting apparent molar expansibility \(E_{\Phi}^0\) and the solvation number ns. The results show that [Bmim][OAc] acts as a structure-maker for the solution, the [Bmim][OAc]–NMP interaction is weaker than the interactions of cation–anion and NMP–NMP, and such effect becomes more and more obvious with increasing temperature. Finally, based on the interactions and the widely accepted solvation hypothesis, the possible better temperature to dissolve cellulose was discussed for the potential cellulose solvent.

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来源期刊
Journal of Solution Chemistry
Journal of Solution Chemistry 化学-物理化学
CiteScore
2.30
自引率
0.00%
发文量
87
审稿时长
3-8 weeks
期刊介绍: Journal of Solution Chemistry offers a forum for research on the physical chemistry of liquid solutions in such fields as physical chemistry, chemical physics, molecular biology, statistical mechanics, biochemistry, and biophysics. The emphasis is on papers in which the solvent plays a dominant rather than incidental role. Featured topics include experimental investigations of the dielectric, spectroscopic, thermodynamic, transport, or relaxation properties of both electrolytes and nonelectrolytes in liquid solutions.
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