| Autor: |
Yang H; Department of Chemistry, Pulp and Paper Research Centre, Centre for Self-Assembled Chemical Structures, McGill University , Montreal, Quebec H3A 2A7, Canada., van de Ven TG; Department of Chemistry, Pulp and Paper Research Centre, Centre for Self-Assembled Chemical Structures, McGill University , Montreal, Quebec H3A 2A7, Canada. |
| Jazyk: |
angličtina |
| Zdroj: |
Biomacromolecules [Biomacromolecules] 2016 Jun 13; Vol. 17 (6), pp. 2240-7. Date of Electronic Publication: 2016 May 26. |
| DOI: |
10.1021/acs.biomac.6b00480 |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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