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Clinical and Translational Medicine, 2022 Aug;29. https://doi.org/10.1016/j.mattod.2022.05.019
Tough,
transparent, biocompatible and stretchable thermoplastic copolymer with high
stability and processability for soft electronics
Gargi Ghosh, Montri
Meeseepong, Atanu Bag, Adeela Hanif, MV Chinnamani, Mohadese Beigtan, Yunseok
Kim, Nae-Eung Lee
Abstract
Materials
with a variety of required properties, including stretchability, toughness, optical
transparency, biocompatibility, processability, and recyclability are
in great demand for soft electronics. Creation of such materials, however,
has been hampered due to the challenges of balancing these properties.
Herein, we report intrinsically stretchable thermoplastic copolymers with
a random sequence of hard and soft domains in the polyimide backbone
in which their superior traits are harnessed to enable the properties of the
copolymer tunable and balanced. We obtained a tough and stretchable copolymer
with high optical transparency, biocompatibility, thermal and chemical
stability, and low water vapor transmission rate. In addition, the polymer is
recyclable and shows excellent processability, allowing for the fabrication
of fibers, thin films, and molded
parts for soft electronics. Furthermore, the utility of the
copolymer was successfully demonstrated for a wearable temperature
sensor on the stretchable copolymer and a copolymer-based
fully stretchable sweat collection patch, suggesting that they have great
potential in soft electronics.
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