Polymerization and Collision in High Concentrations for Brownian Coagulation

Aggregation always occurs in industrial processes with fractal-like particles, especially dense systems (the volume fraction, ϕ>1%). However, the classic aggregation theory, established by Smoluchowski 1917, cannot sufficiently simulate particle dynamics systems, particularly those of generat ed particles. In this article, Langevin dynamic was applied to study collision rate aggregations as well structure aggregates affected different fractions. It is shown that highly concentrated particles progressively higher than a dilute concentration, and SPSD (self-preserving size distribution) approached (σg,n≥1.5). With increase ϕ, broadens, geometric standard 1.54, 1.98, 2.73 at ϕ=0.1, 0.2, 0.3. When higher, radius gyration smaller same cluster (number-based), which means agglomerations are tighter coagulation. The property Df range 1.60–2.0 high-concentration system. Knowing details progress system can be useful for calculating coagulating process.