3D Printing of Multifunctional Conductive Polymer Composite Hydrogels

Functional conductive hydrogels are widely used in various application scenarios, such as artificial skin, cell scaffolds, and implantable bioelectronics. However, their novel designs technological innovations severely hampered by traditional manufacturing approaches. Direct ink writing (DIW) is considered a viable industrial-production 3D-printing technology for the custom production of according to intended applications. Unfortunately, creating functional DIW has long been plagued complicated formulation printing processes. In this study, highly 3D printable poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS)-based made from fully commercially accessible raw materials demonstrated. It shown that complex structures can be directly printed with then precisely converted into high-performance via post-printing freeze–thawing treatment. The 3D-printed hydrogel exhibits high electrical conductivity ≈2000 S m−1, outstanding elasticity, stability durability water, electromagnetic interference shielding, sensing capabilities. Moreover, biocompatible, showing great potential tissue engineering With significant advantages, fabrication strategy expected open up new route create multifunctional features, bring opportunities broaden applications materials.