Durable and thermally switchable polysilsesquioxane adhesives via dynamic covalent bonds: effect of a crosslinker on reversible chemistry

Seung Hyun Kang, Jin Young Seo, Hyeon Ji Oh, Jung Hyun Lee, Albert S. Lee, Kyung Youl Baek

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Thermally switchable ladder-like poly(silsesquioxane) (LPSQ) adhesives using the Diels-Alder reaction were synthesized and utilized as reversible adhesion materials. The LPSQ polymer was blended with various diene crosslinkers and its reversible features were evaluated. LPSQ adhesives with long alkyl crosslinkers, including LPSQ-Oct and LPSQ-Dec, exhibit tremendous reversibility in thermally switchable adhesion. The effect of the chain flexibility of LPSQ side chains on the reversible Diels-Alder and retro Diels-Alder reactions was experimentally and theoretically demonstrated. Moreover, these thermally switchable LPSQ adhesives present excellent mechanical and thermal stabilities compared to commercial adhesives, and they are expected to be potential materials for adhesion applications.

Original languageEnglish
Pages (from-to)679-688
Number of pages10
JournalMaterials Chemistry Frontiers
Volume7
Issue number4
DOIs
Publication statusPublished - 2023 Jan 7

Bibliographical note

Funding Information:
This work was funded by the National Research Foundation of Korea (NRF-2020M3H4A3106403) and the Korea Institute of Science and Technology (KIST) Institutional Program.

Publisher Copyright:
© 2023 The Royal Society of Chemistry.

ASJC Scopus subject areas

  • General Materials Science
  • Materials Chemistry

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