Polymerization with Freezing

Details Polymerization with Freezing Polymerization with Freezing

2005-07-13

arxiv.org/abs/cond-mat/0507313v1

J. Phys. Cond. Mat. 17, S4249 (2005)

Physics

Condensed Matter

Statistical Mechanics

8 pages, 5 figures

Scientific paper

10.1088/0953-8984/17/49/018

Irreversible aggregation processes involving reactive and frozen clusters are investigated using the rate equation approach. In aggregation events, two clusters join irreversibly to form a larger cluster, and additionally, reactive clusters may spontaneously freeze. Frozen clusters do not participate in merger events. Generally, freezing controls the nature of the aggregation process, as demonstrated by the final distribution of frozen clusters. The cluster mass distribution has a power-law tail, F_k ~ k^{-gamma}, when the freezing process is sufficiently slow. Different exponents, gamma=1, 3 are found for the constant and the product aggregation rates, respectively. For the latter case, the standard polymerization model, either no gels, or a single gel, or even multiple gels may be produced.

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