Dynamic covalent diarylbibenzofuranone-modified nanocellulose: Mechanochromic behaviour and application in self-healing polymer composites

K. Imato, J. C. Natterodt, J. Sapkota, R. Goseki, C. Weder, A. Takahara, H. Otsuka

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

The surface of cellulose nanocrystals (CNCs) was modified with a scissile but reversibly recombinable dynamic covalent mechanophore, and the activation of the mechanophore on the CNC surface in bulk was investigated. The recombination behaviour of the activated surface-modified mechanophore exhibited high sensitivity to mechanical stress because of the limited molecular mobility. The modified CNCs could be used to effectively reinforce a self-healable polymer containing similar dynamic covalent linkages through the formation of reversible covalent bonds between the CNC surfaces and the polymer matrix, while the nanocomposite retained the ability to heal. The results of the present study appear to be broadly useful for designing composite materials with fascinating functional properties such as damage self-reporting and self-healing.

Original languageEnglish
Pages (from-to)2115-2122
Number of pages8
JournalPolymer Chemistry
Volume8
Issue number13
DOIs
Publication statusPublished - Apr 7 2017

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biochemistry
  • Polymers and Plastics
  • Organic Chemistry

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