The thermal stability and kinetics of non-isothermal degradation of polypropene and polypropene composites filled with 20 mass% vigorously grounded and mixed raw rice husks (RRH), black rice husks ash (BRHA), white rice husks ash (WRHA) and Aerosil Degussa (AR) were studied. The calculation procedures of Coats – Redfern, Madhysudanan et al., Tang et al., Wanjun et al. and 27 model kinetic equat...

The adsorption of polymethylmethacrylate polymer of different molecular weight at the aerosil/ethyleneglycolor 1,3 butanediol-dimethacrylate interfaces was determined to provide microstructured networks. Their structural characteristics were determined to be controlled by the amount of polymer initially supplied to the system. The sediment (the settled phase) characteristics, determined as a fu...

Colloidal amorphous silica is a product based on micronized silicon dioxide (SiO2) powder. The in large demand the market due to its outstanding adsorption properties. It widely known as AEROSIL®. AEROSIL® technology use of tetrachloride (SiCl4) raw material component, which determines cost, energy and environmental assessments process. One ways improve these technical economic find solutions t...

hydrophobic grade fumed silicas are generally used in tabletting as lubricants. they are also found to retard the release of pharmaceutical actives. this is because of their hydrophobic nature, which gives good cohesive and adhesive properties. considering this point it was thought that they could be used as dry coating agents for solid dosages forms. the model drug selected for this work was p...

In order to use API (active pharmaceutical ingredient) particles in a dry powder formulation, they have to exhibit an aerodynamic diameter of 1 μm – 5 μm. Only this order of magnitude guarantees a penetration to the deeper parts of the lungs. Particles of this scale are very cohesive and possess rather poor flow properties [1], which lead to difficulties concerning volumetrically dosing. To han...