Effect of Surface Modification of CaCO<SUB>3</SUB> Nanoparticles by a Silane Coupling Agent on the Stability of Emulsion and Foam
발표자
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초록
내용
Surface modification of CaCO3 nanoparticles by a silane coupling agent propyltrimethoxysilane was conducted and the effect of surface hydrophobicity on the stability of foam and emulsion was studied in order to test the potential applicability as a foam stabilizer or an emulsifier. The surface modification of CaCO3 nanoparticles by propyltrimethoxysilane was confirmed by FT-IR, DSC and TGA analysis. The atomic concentration of CaCO3 particle surface tested by propyltrimethoxysilane has been also identified by using XRD and XPS analyses. Both floating tests and contact angle measurements were performed to examine the effect of propyltrimethoxysilane concentration on the surface modification of CaCO3 nanoparticles.