Gelation Process and the Scattering Intensity of Chemical Gels through Simulation of an Aggregation Model with Mixed Functionalities(General)

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We study gelation process of chemical gels through simulation of a cluster-cluster-aggregation (CCA) model, and discuss the time development of scattering intensity I(q). With respect to the functionality of monomers, we consider two cases : the four-functional case in which all monomers have four bonds, and the mixed-functional case in which monomers with two bonds and four bonds coexist on the lattice. The structures of gels are quite different for the four-functional and mixed-functional cases. Furthermore, clusters grow faster for the four-functional case than for the mixed-functional case, with a given initial concentration investigated. However, the scattering profiles and their time evolutions are similar for the two cases. At the final stage, the peak intensity of the four-functional case is larger than that of the mixed-functional case, which should be consistent with experiments on speckle patterns.
一般社団法人日本物理学会の論文
2005-02-15