We propose a simple statistical mechanics model for the study of the dynamics of gelling systems. It is based on percolation and bond-fluctuation dynamics for the bond vectors: we study the critical viscoelastic properties and the relaxation patterns in the case of irreversible gelation and the results obtained are discussed by means of scaling arguments. By introducing the idea of a finite lifetime for the bonds and by simply tuning this timescale, the model can be made to present very different dynamics and relaxation patterns corresponding to different gelling phenomenology.
A study of viscoelasticity in gelling systems
DE ARCANGELIS, Lucilla;
2002
Abstract
We propose a simple statistical mechanics model for the study of the dynamics of gelling systems. It is based on percolation and bond-fluctuation dynamics for the bond vectors: we study the critical viscoelastic properties and the relaxation patterns in the case of irreversible gelation and the results obtained are discussed by means of scaling arguments. By introducing the idea of a finite lifetime for the bonds and by simply tuning this timescale, the model can be made to present very different dynamics and relaxation patterns corresponding to different gelling phenomenology.File in questo prodotto:
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