Effect of surface modification of CaCO3 nanoparticles by a silane coupling agent Methyltrimethoxysilane (cas 1185-55-3) on the stability of foam and emulsion

Add time:07/11/2019    Source:sciencedirect.com

In this study, the surface modification of CaCO3 nanoparticles was performed by using a silane coupling agent Methyltrimethoxysilane (cas 1185-55-3) (MTMS) and effect of surface hydrophobicity on the stability of foam and emulsion was investigated. In order to confirm surface modification of CaCO3 nanoparticles by MTMS, Fourier infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis have been carried out. Atomic concentration of CaCO3 particle surface treated by MTMS has been identified by using X-ray diffractometer and X-ray photoelectron spectroscopy analysis. The active ratio for the CaCO3 nanoparticles modified by MTMS was found to be 96.6 ± 0.4% at 15 wt% of MTMS concentration where the contact angle of water on the CaCO3 surface modified by MTMS was found to be 89.6 ± 0.4°. Both stable emulsion and foam were formed at 15 wt% of MTMS concentration, suggesting that CaCO3 nanoparticle treated by a silane coupling agent MTMS is a strong candidate for the potential applicability as a stabilizer for foam and emulsion.

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