Polymethylsilsesquioxane-cellulose nanofiber biocomposite aerogels with high thermal insulation, bendability, and superhydrophobicity

Gen Hayase, Kazuyoshi Kanamori, Kentaro Abe, Hiroyuki Yano, Ayaka Maeno, Hironori Kaji, Kazuki Nakanishi

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

Polymethylsilsesquioxane-cellulose nanofiber (PMSQ-CNF) composite aerogels have been prepared through sol-gel in a solvent containing a small amount of CNFs as suspension. Since these composite aerogels do not show excessive aggregation of PMSQ and CNF, the original PMSQ networks are not disturbed. Composite aerogels with low density (0.020 g cm-3 at lowest), low thermal conductivity (15 mW m-1 K-1), visible light translucency, bending flexibility, and superhydrophobicity thus have been successfully obtained. In particular, the lowest density and bending flexibility have been achieved with the aid of the physical supporting effect of CNFs, and the lowest thermal conductivity is comparable with the original PMSQ aerogels and standard silica aerogels. The PMSQ-CNF composite aerogels would be a candidate to practical high-performance thermal insulating materials.

Original languageEnglish
Pages (from-to)9466-9471
Number of pages6
JournalACS Applied Materials and Interfaces
Volume6
Issue number12
DOIs
Publication statusPublished - 2014 Jun 25
Externally publishedYes

Keywords

  • cellulose nanofibers
  • composite aerogels
  • organic-inorganic hybrids
  • polymethylsilsesquioxane
  • sol-gel
  • thermal insulation

ASJC Scopus subject areas

  • Materials Science(all)

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