甲基咪唑胺类离子液体的合成及其对ATRP反应的影响

发布时间：2017-12-27 11:20

本文关键词：甲基咪唑胺类离子液体的合成及其对ATRP反应的影响　出处：《化工学报》2016年S2期 　论文类型：期刊论文

【摘要】：以N-甲基咪唑为骨架引入1,2-二氯乙烷合成中间体氯化1-氯乙基-3-甲基咪唑([CeMIM]Cl),再与1,3-丙二胺反应合成了氯化1-(丙基氨基)乙基-3-甲基咪唑离子液体([N_2C_3MIM]Cl)。通过FT-IR、1 H NMR对[N_2C_3MIM]Cl进行分析测试,确证了其化学结构。通过循环伏安法测得[N_2C_3MIM]Cl具有较低的氧化还原电势,为-0.522V,与有机配体相比[N_2C_3MIM]Cl具有较好的配位性能。将[N2C3MIM]Cl与CuBr配位用于催化甲基丙烯酸甲酯(MMA)的原子转移自由基聚合(ATRP)反应,经凝胶渗透色谱法(GPC)测试证明[N_2C_3MIM]Cl对ATRP反应具有较好的可控性。原子吸收光谱测定聚合产物PMMA中Cu~(2+)的残留量仅为270mg·kg~(-1),表明与传统有机配体相比,[N_2C_3MIM]Cl有利于催化剂与聚合产物的分离。
[Abstract]:Using N- methimidazole as the skeleton, the intermediate of 1,2- two chloroethane was synthesized, and chlorinated 1- chloroethyl -3- methyl imidazole ([CeMIM]Cl) was synthesized. Then 1- 1- (propylamino) ethyl -3- methyl imidazolium ionic liquid ([N_2C_3MIM]Cl) was synthesized by reaction with 1,3-, two, and amine. The chemical structure was confirmed by the analysis and test of [N_2C_3MIM]Cl by FT-IR and 1 H NMR. [N_2C_3MIM]Cl has a lower redox potential by cyclic voltammetry, which is -0.522V, and [N_2C_3MIM]Cl has better coordination properties than organic ligands. [N2C3MIM]Cl and CuBr were used to coordinate the atom transfer radical polymerization (ATRP) reaction of methyl methacrylate (MMA). The gel permeation chromatography (GPC) test proved that [N_2C_3MIM]Cl had good controllability for ATRP reaction. The residual amount of Cu~ (2+) in PMMA is only 270mg. Kg~ (-1). It indicates that [N_2C_3MIM]Cl is beneficial to the separation of catalyst and polymer products compared with traditional organic ligands.
【作者单位】：河北科技大学化学与制药工程学院;
【基金】：国家自然科学基金项目(21304030) 河北省自然科学基金项目(B2013208183)~~
【分类号】：O645.1;O643.36
【正文快照】： 引言离子液体(ionic liquids)具有无毒、热稳定、可设性、蒸气压低、易于回收、溶解性强等特点[1],近年来,随着对环保要求越来越严,学者们开始研究离子液体作为绿色溶剂替代有机溶剂[2-3]。原子转移自由基聚合(atom transfer radical polymerization,ATRP)是近年迅速发展的一

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