Abstract
Taking 2-acrylamido-2-methylpropane sulfonic acid (AMPS) and 2-dimethylamino ethyl methacrylate (DMAEMA) as monomers, taking N,N’-methylenebis acrylamide as the cross linker, and taking the ammonium persulfate and sodium bisulfite as the redox initiators, we adopted the aqueous polymerization to prepare the Ploy(AMPS-co-DMAEMA) hydrogel and studied the shrinking and bending behaviors of hydrogel under exterior DC electric field stimulation. The result indicated that the DMAEMA monomer content and the pressure could significantly influence the electric sensitivity of hydrogel. With the increase of the DMAEMA content and the non-contract electric field, the Poly(AMPS-co-DMAEMA) hydrogel first bended toward the cathode and then bended toward the anode.
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