Preparation ofβ-cyclodextrin functionalized magnetic composite microspheres and its adsorption for bisphenol A

β-cyclodextrin(β-CD)functionalized magnetic composite microspheres(Fe3 O4 @PG-CD)were prepared by the combination of seeded emulsion polymerization and subsequent ring-opening reaction of epoxy groups.The as-prepared Fe3 O4 @PG-CD are systematically characterized by infrared(IR)instrument,transmission electron microscope(TEM),dynamic light scattering(DLS)instrument,thermogravimetric analysis(TGA)instrument.Moreover,the adsorption property of Fe3O4@PG-CD for model of environmental pollutants,biphenol A(BPA)was also investigated.The experimental results showed that the Fe3 O4 @PG-CD have an excellent adsorption capacity for BPA,the maximum adsorption capacity was 39.68 mg/g.The magnetic composite microspheres developed in this study could serve as a novel separation carrier.