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以丙烯酸甲酯与二乙烯基苯为单体，悬浮共聚合成了大孔白球，通过改变树脂上酯基水解反应时间，合成了一系列不同功能基团密度的树脂。从树脂的滴定曲线和静态。动态吸附实验中，得到了它们的总交换容量和对庆大霉素的交换容量，因此也得到了相对交换容量。最后通过含钙离子庆大霉素溶液的静态吸附实验，比较了树脂的选择性。结果表明，水解时间2h的树脂效果最好，其庆大霉素的相对交换容量达到96．57％，且对庆大霉素吸附量最大，而钙离子吸得最少。
Macroporous white spheres were prepared by suspension copolymerization of methyl acrylate and divinylbenzene. A series of resins with different functional group density were synthesized by changing the hydrolysis reaction time of ester groups on the resin. Titration curve from resin and static. In the dynamic adsorption experiments, their total exchange capacity and the exchange capacity for gentamicin were obtained, and thus the relative exchange capacity was also obtained. Finally, the static adsorption experiments of calcium ion-containing gentamicin solution were performed to compare the resin selectivity. The results showed that the hydrolysis time of resin 2h best, the relative exchange capacity of gentamicin reached 96.57%, and the maximum adsorption of gentamicin, while the least absorption of calcium ions.