Ion-Conducting, Supramolecular Crosslinked Elastomer with a Wide Linear Range of Strain Resistances

Bitgaram Kim, Taesung Park, Soong Ju Oh, Ji Hun Seo

Research output: Contribution to journalArticlepeer-review

Abstract

A conductive elastomer is stretchable and can exhibit ionic or electrical conductivity. However, its resistivity increases exponentially when a small number of strain changes are provided owing to irreversible internal deformation. Therefore, securing a wide range of linearity in the resistance-strain relationship is an important topic in the preparation of highly reliable conductive elastomers. Herein, an ionic conductive elastomer is prepared using 2-methoxyethyl acrylate (MA) and a molecular necklace-like polyrotaxane (PRX) cross-linker to impart reversible elastic properties. The MAPRX exhibits a superior stretchability of up to 1420% with a tensile strength of 0.52 MPa. Besides, it shows a wide range of strain-resistance linearities (∼1100%) owing to the slidable supramolecular cross-linkers. Its linear sensitivity to the provided strain makes it possible to apply it to facile wearable strain sensors with good reproducibility.

Original languageEnglish
Pages (from-to)5012-5021
Number of pages10
JournalACS Applied Polymer Materials
Volume3
Issue number10
DOIs
Publication statusPublished - 2021 Oct 8

Keywords

  • conductive elastomers
  • polyrotaxanes
  • slidable cross-linkers
  • strain sensor
  • supermolecules

ASJC Scopus subject areas

  • Polymers and Plastics
  • Process Chemistry and Technology
  • Organic Chemistry

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