Next Article in Journal
The Effect of Quasi-Spherical Gold Nanoparticles on Two-Photon Induced Reactive Oxygen Species for Cell Damage
Next Article in Special Issue
Recent Progress on the Characterization of Cellulose Nanomaterials by Nanoscale Infrared Spectroscopy
Previous Article in Journal
Effect of Fluorescent Labels on DNA Affinity for Gold Nanoparticles
Previous Article in Special Issue
Ice-Templated Cellulose Nanofiber Filaments as a Reinforcement Material in Epoxy Composites

The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall

Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE 97187 Luleå, Sweden
Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, SE 90187 Umeå, Sweden
SweTree Technologies AB, SE 90403 Umeå, Sweden
Department of Mechanical & Industrial Engineering, University of Toronto, Toronto, ON M5S 3G8, Canada
Author to whom correspondence should be addressed.
Academic Editor: Carla Vilela
Nanomaterials 2021, 11(5), 1179;
Received: 23 March 2021 / Revised: 20 April 2021 / Accepted: 21 April 2021 / Published: 29 April 2021
Wood from field-grown poplars with different genotypes and varying lignin content (17.4 wt % to 30.0 wt %) were subjected to one-pot 2,2,6,6-Tetramethylpiperidin-1-yl)oxyl catalyzed oxidation and high-pressure homogenization in order to investigate nanofibrillation following simultaneous delignification and cellulose oxidation. When comparing low and high lignin wood it was found that the high lignin wood was more easily fibrillated as indicated by a higher nanofibril yield (68% and 45%) and suspension viscosity (27 and 15 mPa·s). The nanofibrils were monodisperse with diameter ranging between 1.2 and 2.0 nm as measured using atomic force microscopy. Slightly less cellulose oxidation (0.44 and 0.68 mmol·g−1) together with a reduced process yield (36% and 44%) was also found which showed that the removal of a larger amount of lignin increased the efficiency of the homogenization step despite slightly reduced oxidation of the nanofibril surfaces. The surface area of oxidized high lignin wood was also higher than low lignin wood (114 m2·g−1 and 76 m2·g−1) which implicates porosity as a factor that can influence cellulose nanofibril isolation from wood in a beneficial manner. View Full-Text
Keywords: cellulose nanofibrils; wood; lignin; TEMPO-oxidation cellulose nanofibrils; wood; lignin; TEMPO-oxidation
Show Figures

Graphical abstract

MDPI and ACS Style

Jonasson, S.; Bünder, A.; Berglund, L.; Hertzberg, M.; Niittylä, T.; Oksman, K. The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall. Nanomaterials 2021, 11, 1179.

AMA Style

Jonasson S, Bünder A, Berglund L, Hertzberg M, Niittylä T, Oksman K. The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall. Nanomaterials. 2021; 11(5):1179.

Chicago/Turabian Style

Jonasson, Simon, Anne Bünder, Linn Berglund, Magnus Hertzberg, Totte Niittylä, and Kristiina Oksman. 2021. "The Effect of High Lignin Content on Oxidative Nanofibrillation of Wood Cell Wall" Nanomaterials 11, no. 5: 1179.

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop