The treatment of dye pollutants in wastewater was a serious environmental issue. In this paper, freezing radical polymerization was used to prepare poly (polyethylene glycol diacrylate -co- maleic anhydride) (p(PEGDA-co-MA)) cryogels with redox initiators of ammonium persulfate / tetramethylethylene diamine in aqueous solution. The mechanical property and chemical structure of cryogels were characterized compression tests, IR, and XPS. After that, adsorption performance of p(PEGDA-co-MA) cryogels for cationic dyes was measured and the maximum adsorption capacity for methylene blue and crystal violet was 447.7 mg·g⁻¹ and 329.5 mg·g⁻¹ (pH = 7.0), respectively. Adsorption isotherm, adsorption kinetics and adsorption thermodynamics were investigated to reveal adsorption mechanism of cryogel materials, which showed that monolayer chemical adsorption was dominant and the adsorption capacity decreased with the increase of temperature. This p(PEGDA-co-MA) cryogels would not only partly developed the polymerization method of vinyl monomers but also strongly expanded the field of dye adsorption materials.

废水中染料污染物的处理是一个严重的环境问题。本文采用冷冻自由基聚合法，以过硫酸铵/四甲基乙二胺的氧化还原引发剂在水溶液中制备聚(聚乙二醇二丙烯酸酯-共-马来酸酐)(p(PEGDA- co -MA))冷冻凝胶。通过压缩测试、IR和XPS对冷冻凝胶的机械性能和化学结构进行了表征。之后，测量了p(PEGDA- co -MA)冷冻凝胶对阳离子染料的吸附性能，对亚甲基蓝和结晶紫的最大吸附容量分别为447.7 mg·g ^-1和329.5 mg·g ^-1 (pH = 7.0)。 ， 分别。通过吸附等温线、吸附动力学和吸附热力学研究揭示了冷冻凝胶材料的吸附机理，结果表明，单层化学吸附占主导地位，吸附容量随着温度的升高而降低。这种p(PEGDA- co -MA)冷冻凝胶不仅部分发展了乙烯基单体的聚合方法，而且有力地拓展了染料吸附材料的领域。