Poly(acrylonitrile-co-ethylene glycol dimethacrylate-co-vinylbenzyl chloride) (poly(AN-co-EGDMA-co-VBC)) was synthesized by suspension polymerization and further hypercrosslinked by Friedel-Crafts reaction to serve as a sorbent to remove the pharmaceuticals. Energy dispersive X-ray analysis showed decreased chlorine content in the polymers, confirming a successful hypercrosslinking. BET analysis revealed that the hypercrosslinked (HXL) poly(AN-co-EGDMA-co-VBC) had a specific surface area up to 363 m2 g−1 with an average particle size of 77.2–174.1 μm. Hypercrosslinking of the polymer increased the specific surface area up to 42%, even at low VBC content (10%). Pore size distribution showed that the terpolymers were mesoporous. The maximum adsorption capacity of diclofenac (DCF) and metformin (MET) determined by the Langmuir isotherm model were up to 61.0 mg g−1 and 5.1 mg g−1, respectively and the adsorption kinetic followed pseudo-second-order rate equation. The equilibrium capacity of the sorbent decreased to approximately 78% for DCF and 72% for MET after four cycles of adsorption-desorption process, exhibiting good reusability property. Graphical abstract Graphical abstract

中文翻译：

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超交联聚（AN-co-EGDMA-co-VBC）：通过悬浮聚合合成、表征以及从水溶液中吸附双氯芬酸和二甲双胍的潜力

聚（丙烯腈-co-乙二醇二甲基丙烯酸酯-co-乙烯基苄基氯）（聚（AN-co-EGDMA-co-VBC））通过悬浮聚合合成，并通过Friedel-Crafts反应进一步超交联以作为吸附剂去除药品。能量色散 X 射线分析显示聚合物中的氯含量降低，证实了成功的超交联。BET 分析表明，超交联 (HXL) 聚 (AN-co-EGDMA-co-VBC) 的比表面积高达 363 m2 g-1，平均粒径为 77.2-174.1 μm。即使在低 VBC 含量 (10%) 下，聚合物的超交联也使比表面积增加了 42%。孔径分布表明三元共聚物是中孔的。Langmuir 等温线模型确定的双氯芬酸 (DCF) 和二甲双胍 (MET) 的最大吸附容量分别高达 61.0 mg g-1 和 5.1 mg g-1，并且吸附动力学遵循伪二级速率方程。经过四个循环的吸附-解吸过程后，吸附剂的平衡容量下降到DCF的约78%和MET的72%，表现出良好的可重复使用性。图形摘要图形摘要