Abstract
Calcium carbonate biomimetic crystallization remains a topic of interest with respect to biomineralization areas in recent research. It is not easy to conduct high-throughput experiments with only a few macromolecule reagents using conventional experimental methods. However, the emergence of microdroplet array technology provides the possibility to solve these issues efficiently. In this article, surface-tension-confined droplet arrays were used to fabricate calcium carbonate. It was found that calcium carbonate crystallization can be conducted in surface-tension-confined droplets. Defects were found on the surface of some crystals, which were caused by liquid flow inside the droplet and the rapid drop in droplet height during the evaporation. The diameter and number of crystals were related to the droplet diameter. Polyacrylic acid (PAA), added as a modified organic molecule control, changed the CaCO3 morphology from calcite to vaterite. The material products of the above experiments were compared with bulk-synthesized calcium carbonate by scanning electron microscopy (SEM), Raman spectroscopy and other characterization methods. Our work proves the possibility of performing biomimetic crystallization and biomineralization experiments on surface-tension-confined microdroplet arrays.
Highlights
The inorganic-organic advanced hybrid materials formed by the biomineralization process have excellent physical and chemical properties, such as good wear resistance and extremely high fracture toughness and strength, which are unmatched by those of synthetic materials [1,2,3]
The results were analyzed and and their morphology was changed by adding Polyacrylic acid (PAA)
Work, calcium calcium carbonate carbonate was was synthesized by using droplets
Summary
The inorganic-organic advanced hybrid materials formed by the biomineralization process have excellent physical and chemical properties, such as good wear resistance and extremely high fracture toughness and strength, which are unmatched by those of synthetic materials [1,2,3]. Biomineralized calcium carbonate products have good biocompatibility and can be used as structural support for organisms [2] and as biosensors [11], controlled released drug carriers [12,13], and so on. Both the water-soluble fraction and the insoluble matrix of organic materials are considered to play essential roles [16]. Researchers have been able to control the morphology, nucleation, growth, and alignment of inorganic particles by using specific templates or macromolecules [17,18] The design and preparation of organic matrices (soluble and insoluble) has become an active area of biomineralization research [19,20]
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