Abstract

A new MoS₂/Fe₃O₄ dendrimer grafted polystyrene (PST)/poly(N-vinylcaprolactam) (PNVCL) was prepared as a temperature-sensitive nanocomposite for adsorption and controlled release of sertraline. The maximum adsorption capacity of nanocomposite for sertraline was about 5.24 mgg⁻¹ under optimum pH of 8, equilibrium time of 30 min and adsorbent dosage of 5 gL⁻¹. The kinetic of sertraline sorption follow the pseudo-second-order kinetic model, and the corresponding isotherm was well fitted with the Redlich–Peterson isotherm model. The highest release of sertraline was obtained at 50 °C during 24 h. The non-Fickian diffusion of the sertraline release from nanocomposite was achieved at 37 and 50 °C.

摘要

制备了一种新的MoS ₂ /Fe ₃ O ₄树枝状聚合物接枝聚苯乙烯（PST）/聚（N-乙烯基己内酰胺）（PNVCL）作为用于吸附和控制释放舍曲林的温度敏感纳米复合材料。在最佳pH 8、平衡时间30 min、吸附剂用量5 gL -1 下^，纳米复合材料对舍曲林的最大吸附量约为5.24 mgg ^-1。舍曲林吸附动力学遵循准二级动力学模型，相应的等温线与Redlich-Peterson等温线模型拟合良好。舍曲林的最高释放是在 50 °C 下 24 小时内获得的。舍曲林从纳米复合材料中释放的非 Fickian 扩散是在 37 和 50 °C 下实现的。