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Amphiphobic encapsulation for biodegradable electronics
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DOI：10.36922/ijb.3871.png)
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Abstract
En 中文
Biodegradable electronics, capable of degradation and resorption in biological environments, require an encapsulation layer for precise lifetime control to perform versatile sensing and actuation in various clinical scenarios. Recent advances in biodegradable polymer chemistry have enabled the development of photocurable encapsulation of biodegradable electronics. However, challenges, such as nonuniform irradiation and incomplete crosslinking due to the limited penetration depth of the light source, restrict their long-term implantable operation. In this study, a 50-mu m layer-by-layer three-dimensional (3D) printing approach was adopted for a through predictable and homogeneous crosslinking of the encapsulation material. The waterproof and mechanical properties of the 3D-printed polybutanedithiol 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione pentenoic anhydride (PBTPA) polymer are analyzed and compared with at-once UV-cured PBTPAs. Our study also investigates the enhanced waterproofing properties of the binary hydrophobic polyanhydride, known for its amphiphobic structure. This structure combines both water-trapping and repulsion mechanisms, supported by a high-density network of hydrogen bonding, that create a barrier against water penetration. The 50-mu m layerby-layer 3D printing approach enables controlled irradiation, thereby improving the lifetime of biodegradable electronics and enhancing their mechanical properties. These advancements broaden the scope of biodegradable electronic applications in various fields.
Keywords:
3D printing
Additive manufacturing
Biodegradable electronics
Amphiphobic
Encapsulation
Journal
I
IF:
6
Papers:
666
Citations:
2.8K