Chemical surface modification of calcium carbonate particles with stearic acid using different treating methods

Regulation of rheological and mechanical properties of polypropylene compositions for automotive parts

“…This contradicts the traditional laws of the flow of melts filled with solid additives, for which an increase in viscosity is typical. This phenomenon may be due to the fact that, in order to improve the rheological properties and wetting of the surface, the CCs are often treated with stearic acid or coupling agents in the amount of 0.5-3 % [22]. Processing improves the compatibility of the filler with a hydrophobic polymer, reduces water absorption during storage, which has a positive effect on the physico-mechanical characteristics [4,23].…”

The surface modification of BaTiO3 and its effects on the microstructure and electrical properties of BaTiO3/silicone rubber composites

“…We can see that the A‐BT/SR, S‐BT/SR, and AS‐BT/SR composites all had higher dielectric constant than BT/SR nanocomposites without modified on the overall explored frequency range. As known, SA is made up of two parts: a hydrophobic tail and a hydrophilic head . During the treatment process, SA is adsorbed on the surface of BT particles via a chemical reaction between the SA's “head(−COOH)” and BT's(−OH).…”

Investigation of the modification process of natural sedimentary calcite by organosilicon compounds

“…The use of mechanochemical activation to intensify the processes of surface treatment of calcium carbonate particles is described in [8,9]. It is pointed out that when the mechanical factor and the chemical modifier are combined, it is possible to increase the uniformity of the obtained product, as well as to increase the degree of hydrophobicity of calcite.…”