咪唑类离子液体微乳液的相关物理化学性质研究

发布时间：2018-06-09 22:58

本文选题：离子液体 + 微乳液　；参考：《河南师范大学》2016年硕士论文

【摘要】：离子液体代替传统微乳液中的一个组分或者两个组分的研究已经取得了很大的进展。基于离子液体的可设性,它也可以代替传统微乳液中的极性相,非极性相和表面活性剂,构成完全由离子液体组成的微乳液。作为国家自然科学基金项目(No.21473050)的一部分,本文主要设计合成了一系列不同结构的离子液体,并研究了由这些离子液体形成的微乳液体系的一些物理化学性质,主要研究内容包括:1.设计合成了一系列不同结构的功能化离子液体,这些离子液体的阳离子主要包括咪唑、吡啶、季铵盐和季擕盐等,并对它们的物化性质进行了表征。在所合成的这些离子液体中,目前找到大约60余组室温下不互溶的离子液体体系,利用溶剂化探针分子测定了相关离子液体的溶剂化参数。之后从这些不互溶的离子液体体系中选取了几个代表性体系,测定并讨论了它们的互溶温度。最后讨论了Fe Cl4-类离子液体+水体系的下临界互溶温度现象。2.研究了离子液体[C_(12)mim][Tf_2N]作为非极性溶剂,离子液体[C_(12)mim][N(CN)_2]作为表面活性剂参与构筑的含水微乳液体系,绘制了体系的相图,讨论了温度对该体系相平衡的影响规律,利用电导法讨论了微乳液的不同结构,最后利用动态光散射技术对微乳液液滴的粒径大小进行了表征。3.研究了以离子液体硝基乙胺作为极性溶剂,咪唑类离子液体[Cnmim][Tf_2N](n=6,8,10,14)作为非极性溶剂参与构筑的三组分均为离子液体的乳液体系,绘制了体系的相图,分析了咪唑类离子液体碳链的变化、胆碱类离子液体表面活性剂碳链的变化、温度等因素对相平衡的影响规律,最后利用表面张力法分析了离子液体表面活性剂在离子液体溶剂中的聚集行为。
[Abstract]:Great progress has been made in the study of ionic liquids replacing one or two components in traditional microemulsions. Based on the observability of ionic liquids, it can also replace the polar phase, non-polar phase and surfactant in the traditional microemulsion to form a microemulsion composed entirely of ionic liquids. As part of National Natural Science Foundation Project No. 21473050, a series of ionic liquids with different structures have been designed and synthesized, and some physical and chemical properties of the microemulsion system formed by these ionic liquids have been studied. The main research contents include: 1. A series of functional ionic liquids with different structures were designed and synthesized. The cations of these ionic liquids mainly included imidazole, pyridine, quaternary ammonium salts and quaternary carrying salts, and their physicochemical properties were characterized. Among the synthesized ionic liquids, about 60 groups of immiscible ionic liquids at room temperature have been found. The solvation parameters of the related ionic liquids have been determined by using solvating probe molecules. Several representative systems were selected from these insoluble ionic liquids and their intersolubility temperatures were measured and discussed. Finally, the lower critical intersolubility temperature phenomenon of FeCl _ 4-like ionic liquid water system is discussed. The aqueous microemulsion system constructed by ionic liquid [Che 12mim] [TfS 2N] as non-polar solvent and ionic liquid [C _ T _ 12] [N _ C _ C _ N] as surfactant was studied. The phase diagram of the system was plotted and the effect of temperature on the phase equilibrium of the system was discussed. The different structures of microemulsion were discussed by conductance method. Finally, the particle size of droplets in microemulsion was characterized by dynamic light scattering (DLS) technique. The ionic liquid nitroethylamine was used as polar solvent and imidazolium ionic liquid [Cnmim] [Tf2N] (Tf2N) was used as nonpolar solvent to construct an ionic liquid emulsion system. The phase diagram of the system was drawn. The change of carbon chain of imidazole ionic liquid, the change of carbon chain of choline ionic liquid surfactant, and the influence of temperature on the phase equilibrium were analyzed. Finally, the aggregation behavior of ionic liquid surfactants in ionic liquid solvents was analyzed by surface tension method.
【学位授予单位】：河南师范大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：O645.1

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