Arias-Ferreiro Goretti, Ares-Pernas Ana, Lasagabáster-Latorre Aurora, Aranburu Nora, Guerrica-Echevarria Gonzalo, Dopico-García M Sonia, Abad María-José
Grupo de Polímeros, Centro de Investigacións Tecnolóxicas, Universidade da Coruña, Campus de Ferrol, 15471 Ferrol, Spain.
Departemento Química Orgánica I, Facultad de Óptica y Optometría, Universidad Complutense de Madrid, Arcos de Jalón 118, 28037 Madrid, Spain.
Polymers (Basel). 2021 Jun 23;13(13):2068. doi: 10.3390/polym13132068.
There is need for developing novel conductive polymers for Digital Light Processing (DLP) 3D printing. In this work, photorheology, in combination with Jacobs working curves, efficaciously predict the printability of polyaniline (PANI)/acrylate formulations with different contents of PANI and photoinitiator. The adjustment of the layer thickness according to cure depth values () allows printing of most formulations, except those with the highest gel point times determined by photorheology. In the working conditions, the maximum amount of PANI embedded within the resin was ≃3 wt% with a conductivity of 10 S cm, three orders of magnitude higher than the pure resin. Higher PANI loadings hinder printing quality without improving electrical conductivity. The optimal photoinitiator concentration was found between 6 and 7 wt%. The mechanical properties of the acrylic matrix are maintained in the composites, confirming the viability of these simple, low-cost, conductive composites for applications in flexible electronic devices.
需要开发用于数字光处理（DLP）3D打印的新型导电聚合物。在这项工作中，光流变学结合雅各布斯工作曲线，有效地预测了具有不同聚苯胺（PANI）和光引发剂含量的聚苯胺（PANI）/丙烯酸酯配方的可印刷性。根据固化深度值调整层厚度，可以打印大多数配方，但光流变学确定的凝胶点时间最长的配方除外。在工作条件下，树脂中嵌入的聚苯胺最大量约为3 wt%，电导率为10 S/cm，比纯树脂高三个数量级。更高的聚苯胺负载量会阻碍打印质量，而不会提高电导率。发现最佳光引发剂浓度在6至7 wt%之间。复合材料中丙烯酸基体的机械性能得以保持，证实了这些简单、低成本的导电复合材料在柔性电子器件中的应用可行性。
