Journal
CELLULOSE
Volume 18, Issue 3, Pages 643-653Publisher
SPRINGER
DOI: 10.1007/s10570-011-9503-5
Keywords
Oxidized nanocellulose; Fluorescent amino acids; Amide bond; Spectroscopic characterization
Funding
- Natural Sciences and Engineering Research Council of Canada
Ask authors/readers for more resources
A hardwood bleached kraft pulp was oxidized by sodium hypochlorite using 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) and sodium bromide in water as catalysts to produce oxidized fibers. These oxidized fibers were mechanically disintegrated into oxidized nano-elements which were separated from the coarse components by centrifugation to obtain oxidized nanocellulose (ONC). The ONC was then coupled with fluorescent amino acids using a two step coupling procedure. First, the ONC was activated by N-ethyl-N'-(3-dimethylaminopropyl) carbodiimide hydrochloride, forming a stable active ester in the presence of N-hydroxysuccinimide. Second, the active ester was reacted with the amino groups on the amino acids, forming an amide bond between the ONC and amino acids. The products (ONC-amino acids) were characterized by transmission electron microscopy and by different spectroscopic techniques such as absorption, emission, FTIR and XPS.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available