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Synthesis of shape-programmable elastomer for a bioresorbable, wireless nerve stimulator.

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Summary

We developed a biodegradable, self-adhesive, shape-transformable polymer (BSS-PLCL) activated by near-physiological temperatures. This material offers exceptional stretchability and tunable dissolution for advanced biomedical applications.

Keywords:
Biodegradable polymersNerve stimulatorsSelf-adhesionShape memoryShape-transformable elastomers

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Soft Robotics

Background:

  • Shape-transformable materials offer advanced functionalities for soft robotics and biomedical implants.
  • Existing materials often have drawbacks like high operating temperatures, rigidity, and biological hazards.

Purpose of the Study:

  • To introduce a novel biodegradable, self-adhesive, shape-transformable polymer (BSS-PLCL).
  • To demonstrate its potential for biomedical applications through thermal stimulation near physiological temperature.

Main Methods:

  • Synthesis and chemical characterization of poly (L-lactide-co-ε-caprolactone) (BSS-PLCL).
  • Evaluation of mechanical properties, including stretchability up to 800%.
  • Assessment of tunable dissolution behaviors under biological conditions.

Main Results:

  • BSS-PLCL exhibits shape transformation triggered by thermal stimulation around 38°C.
  • The material demonstrates exceptional stretchability and controllable degradation.
  • Successful integration with a bioresorbable electronic system was achieved.

Conclusions:

  • BSS-PLCL is a promising biomaterial for advanced applications.
  • Its properties are suitable for developing sophisticated soft robotics and biomedical implants.
  • The material overcomes limitations of existing shape-transformable polymers.