2.2.1 Synthesis of epoxy-functionalized magnetic colloidal
particles
Magnetic latex particles with a magnetic core and epoxy-functionalized
polymer shell were prepared by the co-polymerization of DVB and GMA
monomers at DVB: GMA volume ratio (2:1). The reaction was conducted by
batch emulsion polymerization in the presence of o/w magnetic emulsion
droplets as the seed. Briefly, DVB and GMA monomers were charged into a
100mL three-necked flask reactor containing
Fe3O4 magnetic emulsion (total solid 1.4
gm). The reaction was carried out at 70oC with
stirring rate 300 r.p.m. and under N2 atmosphere in the
presence of the water-soluble initiator potassium persulfate (KPS). The
reaction was allowed to proceed for 24 h and then terminated by cooling
at room temperature. The prepared magnetic colloidal particles were
filtered using glass wool fibers to remove any coarse particles before
further analysis.