writer：Benliang Liang, Jianfeng Wang,* Yingqi Shu, Penggang Yin,* Lin Guo
keywords：bio-inspiration, hybrid films, layered structures
source：期刊
specific source：RSC Adcances
Issue time：2017年
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.