Multi-crosslinkable self-healing polysilsesquioxanes for the smart recovery of anti-scratch properties

Young Yeol Jo, Albert S. Lee, Kyung Youl Baek, Heon Lee, Seung Sang Hwang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A series of multi-crosslinkable, self-healing, ladder-structured polysilsesquioxane inorganic-organic hybrid materials were developed to enhance the mechanical properties through tandem UV-curing and Diels-Alder chemistry. The introduction of UV-curable acryl- or epoxy groups allowed for a higher degree of crosslink density while bringing the inorganic backbones closer together for highly efficient self-healing properties, all with a singular material as the ternary organic functional groups consisting of UV-curable function, diene, and dienophile were tethered to the well-defined inorganic backbone. Exceptional thermal stability (>400 °C), optical transparency (>95%), solution processability, as well as robust surface mechanical properties in both bulk (pencil hardness 6H) and nanoscale (elastic modulus > 9 GPa), properties which can be adroitly recovered through mild and rapid thermal treatment hold great promise for next generation hybrid smart coating materials for application in optoelectronic devices.

Original languageEnglish
Pages (from-to)78-87
Number of pages10
JournalPolymer (United Kingdom)
Volume124
DOIs
Publication statusPublished - 2017 Aug 25

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Keywords

  • Anti-scratch
  • Polysilsesquioxane
  • Self-healing

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry

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