Nowadays, conductive hydrogel has received more and more attention in the field of bionic electronic skin equipment. However, it is still a challenging task to obtain a conductive, anti-bacterial, stretchable and self-healing hydrogel. Based on this situation, we design and prepare a hybrid conductive antibacterial hydrogel based on chitosan and poly (acrylic acid-acrylamide). This kind of hydrogel utilized small molecule polymerization and the anionic and cationic electrostatic effects of chitosan and small molecule polymers to make it possess good mechanical properties: good toughness (&gt;1000%) and high strength (&gt;4.5MPa). In addition, this hydrogel has good electrical conductivity, excellent antibacterial efficiency (&gt;95% antibacterial efficiency) and can achieve rapid self-healing. The strength and conductivity of the healed hydrogel are close to (~90%) the hydrogel before breaking. Chitosan imparts shear thinning properties to the precursor solution, allowing it to be manufactured by 3D printing, so this conductive hydrogel is also highly replaceable. In addition, the experiment also proves the high sensitivity of this hydrogel to deformation, which is beneficial to its application in the field of electronic skin. Animal experiments also prove that this hydrogel can inhibit the inflammatory response near the wound and promote the rapid healing of infected wounds. In summary, this new electronic skin can realize the perception of human movement, and it has broad application prospects for irregularly shaped body surfaces and infected wounds.

Antibacterial hybrid chitosan hydrogel used for bionic electronic skin

ACS Spring Meeting 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.