Fluctuations in Chemical Gelation

Details Fluctuations in Chemical Gelation Fluctuations in Chemical Gelation

2005-10-05

arxiv.org/abs/cond-mat/0510106v4

Physical Review E 75, 041402 (2007)

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 10figures

Scientific paper

10.1103/PhysRevE.75.041402

We study a chemical gelation model in two dimensions which includes both monomer aggregations and bond fluctuations. Our numerical simulation shows that a sol-gel transition occurs when an initial monomer concentration is above a critical concentration. Fractal aggregates grow until the sol-gel transition occurs. After the gelation, however, bond fluctuations break the fractal structure and a novel inhomogeneous gel fibre network appears instead. A pore size distribution of the inhomogeneous structure shows the existence of hierarchical structures in the gel phase. It is also found that slow dynamics appear near the critical concentration.

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