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04.12.2019 | Original Research

Effect of lignin content on the microstructural characteristics of lignocellulose nanofibrils

verfasst von: Haocheng Fu, Wenhua Gao, Bin Wang, Jinsong Zeng, Zheng Cheng, Jun Xu, Kefu Chen

Erschienen in: Cellulose

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Abstract

The microstructure and properties of lignocellulosic fibers usually change during the drying process due to the hornification of fibers. The water retention ability of fibers is an effective way to reflect the degree of fiber hornification. In this study, the effects of lignin content on the microstructural properties of dried-redispersed LCNFs (DLCNFs) were extensively explored. The results showed that the high content of lignin could maintain the microstructural integrity of DLCNFs. The water retention value and hornification degree of high lignin content DLCNFs (22.1%, w/w) were 289.8% and 6.9%, which were much lower than those of low lignin content (6.2%, w/w) DLCNFs. This was probably because that the crosslinking between lignin and carbohydrate effectively prevented the hydrogen bonding formation in the interior-fibers and exterior-fibers, and reduced the irreversible hornicficatoin of LCNFs. This study will be beneficial for the development of the LCNF drying mechanism.

Graphic abstract

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Metadaten
Titel
Effect of lignin content on the microstructural characteristics of lignocellulose nanofibrils
verfasst von
Haocheng Fu
Wenhua Gao
Bin Wang
Jinsong Zeng
Zheng Cheng
Jun Xu
Kefu Chen
Publikationsdatum
04.12.2019
Verlag
Springer Netherlands
Erschienen in
Cellulose
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-019-02859-2