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Nanoscale Simulation of Nanoparticle Phase Stability
Paper ID : 2550-UFGNSM13-FULL
Authors:
حسنعلی اله یاری *
تهران-بلوار ابوذر شمالی-نبش کوچه هشتم غربی- پلاک183-واحد2
Abstract:
Molecular Simulation investigation of charged colloidal suspension is executed. The canonical NVT Monte Carlo ensemble is used and also DLVO theory has dominated the description of the interactions between charged colloidal particles in solution. Effect of temperature micro ions valance and the size of colloidal particles on the phase stability of the solution are investigated. The anticipated results reveal at higher temperatures the suspension is more stable. We see a gradual decrease in the aggregate size at increasing temperature. The colloids showed a lower tendency for coagulation as the temperature of the system increases. on the other hand for more stable suspension to exist lower micro ion valance is favorable .our result shows, higher charge of micro ions, the number of aggregates and particle on average in each aggregate is higher And observed by increasing the charge of micro ions i.e. AAN increases for micro ions having higher charges. The average aggregate number for colloids of bigger size is more than those of smaller size. Qualitative consistency shows by comparing the result with theoretical formula and considering the influence of surface curvature.
Keywords:
Stability; Simulation; Colloidal phenomena; Coagulation
Status : Paper Accepted (Poster Presentation)