Facile preparation and characterization of temperature-responsive hydrophilic crosslinked polymer microspheres by aqueous dispersion polymerization

•Crosslinked microspheres can be prepared by eco-friendly aqueous dispersion polymerization.•Chain transfer reaction of crosslinker can be used to achieve the crosslinking.•Zwitterionic interaction can be utilized to provide temperature-responsive property.•The microspheres can be reused due to their deformability.•The influence law of process conditions on diameter of microspheres can be obtained in this paper.