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 Zhu

doi:10.1016/j.indcrop.2018.11.033

Treesearch

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

Formally Refereed

Authors:

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

Year:

2019

Type:

Scientific Journal

Station:

Forest Products Laboratory

DOI:

https://doi.org/10.1016/j.indcrop.2018.11.033

Source:

Industrial Crops and Products. 129: 15-23.

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Abstract

We conducted the frst 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 hydroxymethyl furfural formed in situ from fructose that is also present in the bark.

Keywords

Nanocellulose, suberin, aromatic substance, 5-hydroxymethylfurfural, p-Toluenesulfonic acid, willow bark

Citation

Dou, Jinze; Bian, Huiyang; Yelle, Daniel J.; Ago, Mariko; Vajanto, Krista; Vuorinen, Tapani; Zhu, Junyong (J.Y.). 2019. Lignin containing cellulose nanofibril production from willow bark at 80 °C using a highly recyclable acid hydrotrope. Industrial Crops and Products. 129: 15-23.