The synthesis of poly(vinylphosphonic acid-co-methacrylic acid) microbeads by suspension polymerization and the characterization of their indium adsorption properties

► Microbeads were synthesized by suspension polymerization based on VPA, MAA and PEGDA. ► The best preparation condition was determined from the yield, water uptake and IEC. ► The adsorption isotherm of indium was fit to the Langmuir and Freundlich models.