论文部分内容阅读
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),再与三乙烯四胺反应合成了氯化1-(三乙基四氨基)乙基-3-甲基咪唑([N_4MIM]Cl)离子液体。通过FTIR、1HNMR对[N_4MIM]Cl进行表征,确证了[N_4MIM]Cl的化学结构。通过循环伏安法测得[N_4MIM]Cl具有较低的氧化还原电势,E1/2为-0.472 V,与有机配体相比,[N_4MIM]Cl具有较好的配位性能。将[N_4MIM]Cl与Cu Br配位用于催化氯化1-烯丙基-3-甲基咪唑离子液体([AMIM]Cl)体系中甲基丙烯酸甲酯(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_4MIM]Cl对ATRP反应具有较好的可控性。原子吸收光谱(AAS)测定聚合产物聚甲基丙烯酸甲酯(PMMA)中Cu~(2+)的残留量仅为360 mg/kg。
N-methylimidazole was used as the skeleton to introduce 1,2-dichloroethane to synthesize 1-chloroethyl-3-methylimidazolium chloride ([CeMIM] Cl) and react with triethylenetetramine 1- (triethyltetraamino) ethyl-3-methylimidazolium chloride ([N_4MIM] Cl) chloride ionic liquid. Characterization of [N_4MIM] Cl by FTIR and 1HNMR confirmed the chemical structure of [N_4MIM] Cl. [N_4MIM] Cl has a lower redox potential and cyclic voltammetry, and E1 / 2 is -0.472 V. Compared with organic ligands, [N_4MIM] Cl has better coordination properties. The coordination of [N_4MIM] Cl with Cu Br was used to catalyze the atom transfer radical polymerization of methyl methacrylate (MMA) in 1-allyl-3-methylimidazolium chloride ionic liquid ([AMIM] Cl) (ATRP). The results of gel permeation chromatography (GPC) showed that [N_4MIM] Cl had good controllability to ATRP. Atomic Absorption Spectrometry (AAS) determination of the polymerization product of polymethyl methacrylate (PMMA) Cu 2+ residue was only 360 mg / kg.