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Issue 52, 2017, Issue in Progress
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A biomimetic ion-crosslinked layered double hydroxide/alginate hybrid film

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Abstract

Natural nacre has an ordered layered arrangement of calcium carbonate platelets and ion-crosslinked protein, which enable it to achieve outstanding mechanical properties. Inspired by the relationship between structure and mechanical properties of natural nacre, we fabricate a Ca2+-crosslinked layered double hydroxide/alginate (LDH/ALG-Ca2+) hybrid film through filtration of Ca2+-crosslinked LDH/ALG hybrid building blocks. The LDH nanoplatelets and alginate were alternately stacked giving an ordered layered structure, in which alginate was crosslinked by Ca2+. The effect of LDH content and Ca2+ crosslinking on the microstructure and interfacial interaction of LDH/ALG-Ca2+ hybrid films was studied systematically. The optimized nacre-like hybrid film exhibits good flexibility and high strength (194 MPa), superior to natural nacre. The ordered layered structure and small diameter of LDH give the hybrid film a high transparency of 74–94% in the visible light wavelength range.

Graphical abstract: A biomimetic ion-crosslinked layered double hydroxide/alginate hybrid film

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Supplementary files

Article information


Submitted
24 Apr 2017
Accepted
20 Jun 2017
First published
27 Jun 2017

This article is Open Access

RSC Adv., 2017,7, 32601-32606
Article type
Paper

A biomimetic ion-crosslinked layered double hydroxide/alginate hybrid film

B. Liang, J. Wang, Y. Shu, P. Yin and L. Guo, RSC Adv., 2017, 7, 32601
DOI: 10.1039/C7RA04577H

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