Hydrophobic calcium carbonate with hierarchical micro–/nanostructure for improving foaming capacity

In this paper, a strategy for synthesizing hierarchical calcite calcium carbonate (CaCO3) microspheres was developed. The material was characterized by SEM, TEM, EDS, FT-IR and XRD. The synthetic CaCO3 has an excellent micro-/nano self-assembled structure, which changes the surface wettability. And the contact angle of CaCO3 with water as high as 130.9°, which has a great change compared with the ordinary CaCO3. At the same time, the product has good foaming properties (increase by 17%) and high adhesion. Novelly, the topographical hydrophobic particles are applied to stabilize the foam.