Organic chemistry

Cationic polymerization

Polymer chemistry

Membrane

Bacteria

Biofouling

Biology

Ultimate tensile strength

Adsorption

Engineering

Conductivity

Physical chemistry

Composite material

Chemistry

Materials science

Antibacterial activity

Elongation

Chemical engineering

Polymer

Genetics

Biochemistry

Journal of Applied Polymer Science

This paper proposes a cationic double‐network hydrogel, which has good electrical conductivity, antibacterial properties, antiprotein adsorption, and mechanical properties. The cationic polymer formed a conductive path in the hydrogel network, so that the gel had good conductivity. With the increase of carboxybetaine ester, the conductivity gradually increases. As a sensor, hydrogel could respond quickly to strains such as stretching and bending. In addition, the hydrogel showed excellent antibacterial properties against Escherichia coli , the antibacterial rate can reach up to 99%. After hydrolysis, the hydrogel showed stable antiprotein adsorption performance. The tensile strength of the gel could reach 1.05 MPa, and the elongation at break was 474.31%. Therefore, this gel may be used for dressing and electronic skin. And the morphology of the hydrogel was characterized by FT‐IR, X‐ray diffraction, and SEM.

A conductive, antibacterial, and antifouling hydrogel based on zwitterion