preparation of a magneto-responsive acrylic pressure-sensitive adhesive

In recent years, considerable efforts have been devoted to formulating stimuli-responsive adhesives. however, creating magneto-responsiveness in a widely-used category of adhesives, namely pressure-sensitive adhesives (psas), has been overlooked. herein, fe3o4 nanoparticles were prepared by the co-precipitation method and were modified by silanization. copolymerization of acrylic comonomers was subsequently performed in the presence of 10 wt. % modified fe3o4 nanoparticles. both peel force and tack of the resulting psa improved by 13.5% in the presence of a 1200 g magnetic field.