基于N，N-二甲基丙烯酰胺的水凝胶的合成及重金属吸附研究
Synthesis and Heavy-Metal Sorption Studies of ,-Dimethylacrylamide-Based Hydrogels.
作者信息
Akhmetzhan Ayatzhan, Abeu Nurgeldi, Longinos Sotirios Nik, Tashenov Ayezkhan, Myrzakhmetova Nurbala, Amangeldi Nurgul, Kuanyshova Zhanar, Ospanova Zhanar, Toktarbay Zhexenbek
机构信息
Faculty of Natural Sciecnes, L.N. Gumilyov Eurasian National University, Kazhymukan Street 5, Astana 010000, Kazakhstan.
Department of Analytical, Colloidal Chemistry and Technology of Rare Elements, Faculty of Chemistry and Chemical Technologies, Al-Farabi Kazakh National University, Al-Farabi Av. 71, Almaty 050040, Kazakhstan.
出版信息
Polymers (Basel). 2021 Sep 13;13(18):3084. doi: 10.3390/polym13183084.
In this work, a hydrogel system was produced via radical polymerization of ,-dimethylacrylamide and 2-acrylamido-2-methylpropanesulfonic acid in the presence of ,-methylene-bis-acrylamide as a crosslinker and ammonium persulfate as an initiator. Parameters that impact the conversion of copolymerization (such as initial concentration of monomers, temperature, initiator dose, and time) were studied. The swelling degree of the hydrogel was investigated with the addition of a crosslinker and initiator at different pH levels. A hydrogel with high conversion and high swelling degree was selected to investigate their ability for adsorption of Pb(II) ions from solutions. Adsorption behavior of Pb(II) ions in a hydrogel was examined as a function of reaction time and concentration of lead ions from a solution of Pb(II) ions.
在本研究中，通过在作为交联剂的N,N'-亚甲基双丙烯酰胺和作为引发剂的过硫酸铵存在下，使N,N'-二甲基丙烯酰胺和2-丙烯酰胺基-2-甲基丙烷磺酸进行自由基聚合，制备了一种水凝胶体系。研究了影响共聚转化率的参数（如单体初始浓度、温度、引发剂用量和时间）。在不同pH值下，通过添加交联剂和引发剂来研究水凝胶的溶胀度。选择具有高转化率和高溶胀度的水凝胶来研究其从溶液中吸附Pb(II)离子的能力。考察了水凝胶中Pb(II)离子的吸附行为与反应时间以及Pb(II)离子溶液中铅离子浓度的关系。
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