Biodegradable elastomeric circuit boards from citric acid-based polyesters
Biodegradable elastomeric circuit boards from citric acid-based polyesters
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DOI：
10.1038/s41528-023-00258-z
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发表时间：
2023-06
影响因子：
14.6
通讯作者：
Brendan L. Turner;Jack Twiddy;Michael D. Wilkins;Srivatsan Ramesh;Katie Kilgour;Eleo Domingos;Olivia N
中科院分区：
文献类型：
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作者：
Brendan L. Turner;Jack Twiddy;Michael D. Wilkins;Srivatsan Ramesh;Katie Kilgour;Eleo Domingos;Olivia N
可回收和可生物降解的微电子产品，即“绿色”电子产品，正在成为应对电子废物这一全球挑战的可行解决方案。具体地说，柔性电路板是材料开发和增加绿色电子在生物医学应用中的效用的主要目标。电路板基板和封装具有良好的介电性、机械和热稳定性，并与微制造工艺兼容。聚(辛亚甲基马来酸(酸酐)柠檬酸酯)(POMAC)是一种柠檬酸基弹性体，具有可调节的降解和机械性能，为电路板基板和封装提供了一种前景看好的替代方案。在这里，我们报告弹性电路板(ECB)的特性。优化了合成和工艺条件，以获得所需的降解和机械性能，以生产可伸缩电路。对ECB轨迹进行了表征，显示出方块电阻为0.599 Ωcm−2，串扰距离为<；0.6 mm，并在1000次应变循环后显示出稳定的0%应变电阻至20%。介绍了单层和封装ECB的制备方法。
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.