No abstract

3D printing has received a lot of attention for medical devices development. Polyethylene glycol diacrylate (PEGDA) and poly(3,4-ethylenedioxythiophene) (PEDOT) have been exploited as a photocurable composite resin for vat polymerization 3D printing to obtain both biocompatible and conducting properties. However, there has been no report on the performance of the conductive polymer from different preparation methods of PEDOT:PSS, which are: as received PEDOT:PSS, dried PEDOT:PSS, sulfuric-treated PEDOT:PSS. Here we first investigated the PEGDA:PEDOT blends properties. The PEDOT:PSS treated by sulfuric acid provided the highest transparency and the lowest resistivity, while the composite resin from dried PEDOT:PSS showed the lowest swelling degree. The swelling degree could be reduced when the amount of DI in the PEDOT:PSS solution was decreased. The electrochemical behavior of the composite from treated PEDOT:PSS provides the promising potential to be used as a working electrode for biosensor application.