A novel polystyrene sulfonate sodium (PSS) magnetic material was prepared by surface-initiated atom transfer radical polymerization (SI-ATRP). The starting materials were brominated magnetic material as the carrier and macroinitiator, sodium styrene sulfonate (NaSS) as the monomer, and cuprous bromide/2,2'-dipyridyl as the catalyst system. The PSS material was characterized by Fourier transform infrared spectroscopy (FT-IR), elemental analysis, transmission electron microscope (TEM), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and a vibrating sample magnetometer (VSM). The adsorption properties of the material were then investigated on sulfa antibiotics. The kinetic and thermodynamic parameters were determined in adsorption of sulfamethazine (the smallest molecular-weight sulfonamide). The adsorption amount of sulfamerazine free acid (SMR) was found to increase with the initial concentration and temperature of SMR in solution. The adsorption effect was maximized at an initial concentration of 0.6 mmol/L. The static saturation adsorption capacity of the material was 33.53 mg/g, Langmuir and Freundlich equations exhibited good fit. The thermodynamic equilibrium equation is calculated as ΔG < 0, ΔH = 38.29 kJ/mol, ΔS > 0, which proves that the adsorption process is a process of spontaneous, endothermic and entropy increase. Kinetic studies show that the quasi-second-order kinetic equation can better fit the kinetic experimental results, which is consistent with the quasi-second-order kinetic model. The experimental results of kinetic studies were well fitted to a quasi-second-order kinetic equation. High performance liquid chromatography (HPLC) of an actual milk sample treated by the PSS magnetic material confirmed the strong adsorption of SMR from milk.

中文翻译：

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基于SI-ATRP法制备高容量磁性聚苯乙烯磺酸钠材料及其对磺胺类抗生素的吸附性能研究。

通过表面引发的原子转移自由基聚合（SI-ATRP）制备了一种新型的聚苯乙烯磺酸钠（PSS）磁性材料。起始原料为溴化磁性材料作为载体和大分子引发剂，苯乙烯磺酸钠（NaSS）作为单体，溴化亚铜/ 2,2'-联吡啶为催化剂体系。通过傅立叶变换红外光谱（FT-IR），元素分析，透射电子显微镜（TEM），热重分析（TGA），扫描电子显微镜（SEM）和振动样品磁力计（VSM）对PSS材料进行了表征。然后在磺胺抗生素上研究了该材料的吸附性能。在磺胺二甲嘧啶（最小分子量磺酰胺）的吸附中确定动力学和热力学参数。发现磺胺嘧啶游离酸（SMR）的吸附量随溶液中SMR的初始浓度和温度而增加。初始浓度为0.6 mmol / L时，吸附效果最大。该材料的静态饱和吸附容量为33.53 mg / g，Langmuir和Freundlich方程显示出良好的拟合度。计算得出热力学平衡方程为ΔG<0，ΔH= 38.29 kJ / mol，ΔS> 0，这证明吸附过程是自发，吸热和熵增加的过程。动力学研究表明，准二级动力学方程可以更好地拟合动力学实验结果，与准二级动力学模型相吻合。动力学研究的实验结果很好地拟合了准二级动力学方程。