Recyclable and biodegradable microelectronics, i.e., “green” electronics, are emerging as a viable solution to the global challenge of electronic waste. Specifically, flexible circuit boards represent a prime target for materials development and increasing the utility of green electronics in biomedical applications. Circuit board substrates and packaging are good dielectrics, mechanically and thermally robust, and are compatible with microfabrication processes. Poly(octamethylene maleate (anhydride) citrate) (POMaC) – a citric acid-based elastomer with tunable degradation and mechanical properties – presents a promising alternative for circuit board substrates and packaging. Here, we report the characterization of Elastomeric Circuit Boards (ECBs). Synthesis and processing conditions were optimized to achieve desired degradation and mechanical properties for production of stretchable circuits. ECB traces were characterized and exhibited sheet resistance of 0.599 Ω cm⁻², crosstalk distance of <0.6 mm, and exhibited stable 0% strain resistances after 1000 strain cycles to 20%. Fabrication of single layer and encapsulated ECBs was demonstrated.

可回收和可生物降解的微电子产品，即“绿色”电子产品，正在成为应对全球电子废物挑战的可行解决方案。具体而言，柔性电路板是材料开发和提高绿色电子在生物医学应用中效用的主要目标。电路板基板和封装是良好的电介质，具有机械和热稳定性，并且与微细加工工艺兼容。聚（辛亚甲基马来酸酐（酸酐）柠檬酸盐）(POMaC) 是一种具有可调降解和机械性能的柠檬酸基弹性体，为电路板基板和包装​​提供了一种很有前途的替代品。在这里，我们报告了弹性电路板 (ECB) 的特性。优化了合成和加工条件，以实现可拉伸电路生产所需的降解和机械性能。ECB 迹线经过表征并表现出 0.599 Ω cm 的薄层电阻^-2，串扰距离 <0.6 mm，并且在 1000 次至 20% 的应变循环后表现出稳定的 0% 应变电阻。演示了单层和封装 ECB 的制造。