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A Bottom-up Route to a Chemically End-to-End Assembly of Nanocellulose Fibers.
- Source :
-
Biomacromolecules [Biomacromolecules] 2016 Jun 13; Vol. 17 (6), pp. 2240-7. Date of Electronic Publication: 2016 May 26. - Publication Year :
- 2016
-
Abstract
- In this work, we take advantage of the rod-like structure of electrosterically stabilized nanocrystalline cellulose (ENCC, with a width of about 7 nm and a length of about 130 nm), which has dicarboxylated cellulose (DCC) chains protruding from both ends, providing electrosterical stability for ENCC particles, to chemically end-to-end assemble these particles into nanocellulose fibers. ENCC with shorter DCC chains can be obtained by a mild hydrolysis of ENCC with HCl, and subsequently the hydrolyzed ENCC (HENCC, with a width of about 6 nm and a length of about 120 nm) is suitable to be assembled into high aspect ratio nanofibers by chemically cross-linking HENCC from one end to another. Two sets of HENCC were prepared by carbodiimide-mediated formation of an alkyne and an azide derivative, respectively. Cross-linking these two sets of HENCC was performed by a click reaction. HENCCs were also end-to-end cross-linked by a bioconjugation reaction, with a diamine. From atomic force microscopy (AFM) images, about ten HENCC nanoparticles were cross-linked and formed high aspect ratio nanofibers with a width of about 6 nm and a length of more than 1 μm.
Details
- Language :
- English
- ISSN :
- 1526-4602
- Volume :
- 17
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Biomacromolecules
- Publication Type :
- Academic Journal
- Accession number :
- 27211496
- Full Text :
- https://doi.org/10.1021/acs.biomac.6b00480