Hanif Adeela, Ghosh Gargi, Meeseepong Montri, Haq Chouhdry Hamna, Bag Atanu, Chinnamani M V, Kumar Surjeet, Sultan Muhammad Junaid, Yadav Anupama, Lee Nae-Eung
School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Kyunggi-do, Korea.
SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon 16419, Kyunggi-do, Korea.
Micromachines (Basel). 2021 Aug 28;12(9):1036. doi: 10.3390/mi12091036.
Biodegradable stretchable electronics have demonstrated great potential for future applications in stretchable electronics and can be resorbed, dissolved, and disintegrated in the environment. Most biodegradable electronic devices have used flexible biodegradable materials, which have limited conformality in wearable and implantable devices. Here, we report a biodegradable, biocompatible, and stretchable composite microfiber of poly(glycerol sebacate) (PGS) and polyvinyl alcohol (PVA) for transient stretchable device applications. Compositing high-strength PVA with stretchable and biodegradable PGS with poor processability, formability, and mechanical strength overcomes the limits of pure PGS. As an application, the stretchable microfiber-based strain sensor developed by the incorporation of Au nanoparticles (AuNPs) into a composite microfiber showed stable current response under cyclic and dynamic stretching at 30% strain. The sensor also showed the ability to monitor the strain produced by tapping, bending, and stretching of the finger, knee, and esophagus. The biodegradable and stretchable composite materials of PGS with additive PVA have great potential for use in transient and environmentally friendly stretchable electronics with reduced environmental footprint.
可生物降解的可拉伸电子产品在可拉伸电子学的未来应用中已展现出巨大潜力，并且能够在环境中被吸收、溶解和分解。大多数可生物降解电子设备使用的是柔性可生物降解材料，这些材料在可穿戴和可植入设备中的贴合性有限。在此，我们报道一种由聚癸二酸甘油酯（PGS）和聚乙烯醇（PVA）组成的可生物降解、生物相容且可拉伸的复合微纤维，用于瞬态可拉伸设备应用。将高强度PVA与加工性、成型性和机械强度较差的可拉伸且可生物降解的PGS复合，克服了纯PGS的局限性。作为一种应用，通过将金纳米颗粒（AuNPs）掺入复合微纤维中开发的基于可拉伸微纤维的应变传感器，在30%应变的循环和动态拉伸下显示出稳定的电流响应。该传感器还显示出能够监测手指、膝盖和食道的敲击、弯曲和拉伸所产生的应变。PGS与添加剂PVA的可生物降解且可拉伸的复合材料在具有减少环境足迹的瞬态和环保型可拉伸电子学方面具有巨大的应用潜力。
