Publications scientifiques
Joseph Marie Siéliéchi
Jean Bosco Tchatchueng
R. Kamga
Aurel Tăbăcaru
Rodica Mihaela Dinică
Mirela Praisler
International Journal of Scientific Engineering and Technology
The kaolinite (Douala, Cameroun) (named D0M) was activated with HCl 0.5M at 25°C for 24h (named D05M) to obtain optimum parameters for imparting a maximum power toward facial mask. The natural and activated samples were characterized by scanning electron microscopy (SEM), X-ray Dispersive Energy Spectroscopy (XDE), X Fluorescence (XF), X-ray diffraction (XRD), by Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analysis (TGA), Nitrogen adsorption-desorption, pore size distribution (PSD), and rheological properties of the samples were determined. The results show that the acid activation implore the specific surface area from 55.05 m 2 /g to 61.23 m 2 /g, whereas total pore volume is 0.228ml/g before acid activation and 0.248 ml/g after activation. The essential elements such as calcium, Magnesium and sodium not change considerably; the superficial properties are not modified. Rheological analyzes show that viscosity increase with acid activation and be more benefit as facial mask application.
