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Linking self-assembly, rheology, and gel transition in attractive colloids
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zaccone, Alessio Winter, Horst Henning Siebenbuerger, Miriam Ballauff, Matthias |
| Copyright Year | 2014 |
| Abstract | We propose a microscopic framework based on nonequilibrium statistical mechanics to connect the microscopic level of particle self-assembly with the macroscopic rheology of colloidal gelation. The method is based on the master kinetic equations for the time evolution of the colloidal cluster size distribution, from which the relaxation time spectrum during the gelation process can be extracted. The relaxation spectrum is a simple stretched-exponential for irreversible diffusion-limited colloidal aggregation gelation, with a stretching exponent df/3, where df is the mass fractal dimension. As opposed to glassy systems, the stretched-exponential relaxation does not result from quenched disorder in the relaxation times, but from the self-assembly kinetics in combination with the fractal character of the process. As the master kinetic equations for colloidal aggregation do not admit bond-percolation solutions, the arrest mechanism is driven by the interconnection among fractal clusters when excluded volume be... |
| Starting Page | 1219 |
| Ending Page | 1244 |
| Page Count | 26 |
| File Format | PDF HTM / HTML |
| DOI | 10.1122/1.4878838 |
| Alternate Webpage(s) | http://rheology.tripod.com/z04.37.pdf |
| Alternate Webpage(s) | https://doi.org/10.1122/1.4878838 |
| Volume Number | 58 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
