Lignin containing cellulose nanofibril production from willow bark at 80 °C using a highly recyclable acid hydrotrope

Jinze Dou, Huiyang Bian, Daniel J. Yelle, Mariko Ago, Krista Vajanto, Tapani Vuorinen*, Junyong (J Y.). Zhu

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)

Abstract

We conducted the first comparative exploration on lignin containing cellulose nanofibril films prepared alternatively from willow bark and wood using a highly recyclable acid hydrotrope, aqueous p-toluenesulfonic acid, as a sustainable means for isolating the nanofibrils. The nanofibrils of willow bark were hydrophobic and produced dense films of high strength under hot pressing. The hydrophobicity resulted from condensation of the residual lignin with low molecular weight aromatic substances of the bark and hydroxymethylfurfural formed in situ from fructose that is also present in the bark.

Original languageEnglish
Pages (from-to)15-23
Number of pages9
JournalIndustrial Crops and Products
Volume129
DOIs
Publication statusPublished - 1 Mar 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • 5-Hydroxymethylfurfural
  • Aromatic substance
  • Nanocellulose
  • p-Toluenesulfonic acid
  • Suberin
  • Willow bark

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