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- Title
Amine-decorated nanocrystalline cellulose surfaces: synthesis, characterization, and surface properties.
- Authors
Hemraz, Usha D.; Boluk, Yaman; Sunasee, Rajesh
- Abstract
In this present work, terminal amino-functionalized nanocrystalline cellulose derivatives were prepared using a simple two-step protecting group-free protocol under aqueous reaction conditions at room temperature. Carboxylate groups were first introduced onto the surface of nanocrystalline cellulose (NCC) via a TEMPO-mediated oxidation. Then, reaction of surface-carboxylated NCC with bifunctional amines of small alkyl chain length by EDC/NHS-mediated coupling furnished the desired aminated NCC via an amide linkage. Surface covalent functionalization was confirmed by Fourier transform infrared spectroscopy, elemental analysis, and X-ray photoelectron spectroscopy. Size, surface charge, morphology, and thermal properties were obtained by various techniques. STEM images revealed no change in structure and morphology of the materials after TEMPO-mediated oxidation but a slight agglomeration was observed after surface covalent functionalization with diamines. While amide linkage confers stability, terminal primary amine groups on the surface of NCC represent a versatile reactive functional group for bioconjugation with other biomolecules for potential biomedical applications.
- Subjects
CELLULOSE synthase; CELLULOSE; SURFACE properties; FOURIER transform infrared spectroscopy; X-ray photoelectron spectroscopy; SURFACE charges
- Publication
Canadian Journal of Chemistry, 2013, Vol 91, Issue 10, p974
- ISSN
0008-4042
- Publication type
Article
- DOI
10.1139/cjc-2013-0165