Issue 28, 2015

Fabrication of nanocellulose–hydroxyapatite composites and their application as water-resistant transparent coatings

Abstract

Nanosized composite rods ∼300 nm in length and ∼20 nm in width were produced by deposition of 22–77 wt% of a c-axis-oriented hydroxyapatite (HA) on cellulose nanocrystals (CNCs). The CNCs functionalized with sulphonic groups were covered with the HA nanocrystals through controlled nucleation and growth under a moderately supersaturated condition in a solution system based on a simulated body fluid. Water-resistant transparent coatings 2–4 μm thick were obtained via evaporation-induced assembly of CNC–HA nanocomposites by casting their suspension on a glass substrate and the subsequent growth of HA nanocrystals by vapour hydrothermal treatment. The composite coatings exhibited improved mechanical strength compared to that of crustacean exoskeletons, and potential for bone regeneration.

Graphical abstract: Fabrication of nanocellulose–hydroxyapatite composites and their application as water-resistant transparent coatings

Article information

Article type
Paper
Submitted
16 May 2015
Accepted
08 Jun 2015
First published
22 Jun 2015
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. B, 2015,3, 5858-5863

Fabrication of nanocellulose–hydroxyapatite composites and their application as water-resistant transparent coatings

M. Ishikawa, Y. Oaki, Y. Tanaka, H. Kakisawa, G. Salazar-Alvarez and H. Imai, J. Mater. Chem. B, 2015, 3, 5858 DOI: 10.1039/C5TB00927H

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