Synthesized biocompatible and conductive ink for 3D printing of flexible electronics.

Synthesized biocompatible and conductive ink for 3D printing of flexible electronics. J Mech Behav Biomed Mater. 2020 Oct;110:103960 Authors: Kazemzadeh Farizhandi AA, Khalajabadi SZ, Krishnadoss V, Noshadi I Abstract Three-dimensional (3D) printing is an efficient technique for the fabrication of electronic devices. It also enables the use conductive of biomaterials in various applications, such as implants and flexible devices. Designing a new bioink is extremely challenging. For bioelectronics devices, bioink materials should be printable, flexible, conductive, harmless to cells, and sufficiently strong to maintain their shape when immersed in nutrients or under pressure. Over the past few years, several flexible conductive bioinks have been developed that are based on composite pastes containing a biopolymer and conductive micro- and nanoscale materials in the form of metallic particles, conducting polymers, or a mixture of them. Herein, we report a new strategy for the fabrication of a bioink for a commercial 3D printer with the desired conductivity, mechanical properties, and biocompatibility, using a poly(glycerol-co-sebacate) (PGS)-based polymer and zinc. The PGS-based polymer and lithium phenyl-2,4,6-trimethylbenzoylphosphinate (as a photoinitiator) were added to the zinc, and then, the prepared bioink was polymerized during 3D printing under visible light. According to a microstructural investigation using scanning electron...
Source: Journal of the Mechanical Behavior of Biomedical Materials - Category: Materials Science Authors: Tags: J Mech Behav Biomed Mater Source Type: research