Skip to Main Content
Tailoring the yield and characteristics of wood cellulose nanocrystals (CNC) using concentrated acid hydrolysisAuthor(s): Liheng Chen; Qianqian Wang; Kolby Hirth; Carlos Baez; Umesh P. Agarwal; J. Y. Zhu
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
Download Publication (1.03 MB)
DescriptionCellulose nanocrystals (CNC) have recently received much attention in the global scientific community for their unique mechanical and optical properties. Here, we conducted the first detailed exploration of the basic properties of CNC, such as morphology, crystallinity, degree of sulfation and yield, as a function of production condition variables. The rapid cellulose depolymerization and sulfation reactions under concentrated acid concentrations of around 60 wt% resulted in a very narrow operating window for CNC production. We found that CNC yields as high as 70 wt% from a bleached eucalyptus kraft pulp with glucan content of 78 wt% can be achieved under a tight range of reaction conditions and that a weighted average length of over 200 nm and sulfur content (a measure of CNC surface charge) between 3 and 10 mg/g can be produced. This study provided critical knowledge for the production of CNC with characteristics tailored for different specific applications, significant to commercialization.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationChen, Liheng; Wang, Qianqian; Hirth, Kolby; Baez, Carlos; Agarwal, Umesh P.; Zhu, J. Y. 2015. Tailoring the yield and characteristics of wood cellulose nanocrystals (CNC) using concentrated acid hydrolysis. Cellulose. 22(3): 1753-1762.
KeywordsCellulose nanocrystals (CNC), Crystallinity, Crystal length and morphology, Surface charge, CNC yield optimization, Concentrated acid hydrolysis, Cellulose nanocrystals (CNC), Crystallinity, Crystal length and morphology, Surface charge, CNC yield optimization, Concentrated acid hydrolysis
- Kinetics of Strong Acid Hydrolysis of a Bleached Kraft Pulp for Producing Cellulose Nanocrystals (CNCs)
- Green and low-cost production of thermally stable and carboxylated cellulose Nanocrystals and nanofibrils using highly recyclable dicarboxylic acids
- Strong and Optically Transparent Films Prepared Using Cellulosic Solid Residue Recovered from Cellulose Nanocrystals Production Waste Stream
XML: View XML