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Self-healing hydrogel electrodes from ingestible materials

Journal Article


Abstract


  • Abstract: Mechanically robust self-healing conducting hydrogel offer new possibilities to further the state of the art of ingestible (edible) device research. Here, we report self-healing hydrogel electrodes based on readily available ingestible materials sourced from supermarkets. We used an interpenetrating polymer network hydrogel consisting of sodium tetraborate-crosslinked poly(vinyl acetate) and food-grade gelatin that exhibited synergistic strengthening enabling it to withstand the stresses similar to those experienced in the gastrointestinal tract. The edible gels achieved full self-healing within 1 min (electrical conductivity 8.8 ± 0.8 mS/cm) and 1 h (tensile strength 60 ± 5 kPa), respectively, of reconnection of two severed halves. Graphic Abstract: [Figure not available: see fulltext.].

Publication Date


  • 2021

Citation


  • Keller, A., Warren, H., & Panhuis, M. I. H. (2021). Self-healing hydrogel electrodes from ingestible materials. MRS Communications, 11(3), 342-348. doi:10.1557/s43579-021-00024-0

Scopus Eid


  • 2-s2.0-85102083334

Start Page


  • 342

End Page


  • 348

Volume


  • 11

Issue


  • 3

Abstract


  • Abstract: Mechanically robust self-healing conducting hydrogel offer new possibilities to further the state of the art of ingestible (edible) device research. Here, we report self-healing hydrogel electrodes based on readily available ingestible materials sourced from supermarkets. We used an interpenetrating polymer network hydrogel consisting of sodium tetraborate-crosslinked poly(vinyl acetate) and food-grade gelatin that exhibited synergistic strengthening enabling it to withstand the stresses similar to those experienced in the gastrointestinal tract. The edible gels achieved full self-healing within 1 min (electrical conductivity 8.8 ± 0.8 mS/cm) and 1 h (tensile strength 60 ± 5 kPa), respectively, of reconnection of two severed halves. Graphic Abstract: [Figure not available: see fulltext.].

Publication Date


  • 2021

Citation


  • Keller, A., Warren, H., & Panhuis, M. I. H. (2021). Self-healing hydrogel electrodes from ingestible materials. MRS Communications, 11(3), 342-348. doi:10.1557/s43579-021-00024-0

Scopus Eid


  • 2-s2.0-85102083334

Start Page


  • 342

End Page


  • 348

Volume


  • 11

Issue


  • 3