Environmentally Friendly Conductive Screen‐Printable Inks Based on N‐Doped Graphene and Polyvinylpyrrolidone. Issue 6 (28th October 2021)

• Record Type: Journal Article
• Authors: Franco, Miguel; Motealleh, Azadeh; Costa, Carlos M.; Hilliou, Loic; Perinka, Nikola; Ribeiro, Clarisse; Viana, Júlio César; Costa, Pedro; Lanceros-Mendez, Senentxu
• Is Part Of: Advanced engineering materials. Volume 24:Issue 6(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-10-28
• Subjects: biocompatible inks -- conductive inks -- graphene -- green electronics -- screen printing; Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.202101258
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : The development of polymer‐based conductive inks has gained increasing interest in the areas of printed and molded electronics. Graphene‐based materials are explored in this scope, reduced graphene oxide (rGO) being among the most used conductive filler components of the inks. Herein, rGO is doped with nitrogen to obtain N‐rGO; the replacement of oxygen atoms by nitrogen ones increases the electrical conductivity of graphene. Polymer‐based conductive inks reinforced with graphene are developed based on polyvinylpyrrolidone (PVP) as polymer binder and dihydrolevoglucosenone (Cyrene) as solvent, leading thus to environmentally friendly conductive inks. Screen‐printable inks are optimized in terms of viscosity and adhesion properties, leading to printed films with sheet resistance close to R s = 1 kΩ sq −1, the graphene:PVP inks being also biocompatible and nontoxic. Abstract : Conductive graphene:polyvinylpyrrolidone (PVP) composites can be customized for additive manufacturing processes. These types of formulations are tailored as inks, presenting functional properties have a wide range of applications. Graphene and nitrogen‐doped graphene dispersed into PVP using environmentally friendly solvent Cyrene was worked to develop screen‐printing patterns with low electrical resistance and excellent rheology properties, being biocompatible and nontoxic.