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Strain hardening of fractal colloidal gels
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Gisler, T., Ball, Robin and Weitz, D. A.. (1999) Strain hardening of fractal colloidal gels. Physical Review Letters, Vol.82 (No.5). pp. 1064-1067. ISSN 0031-9007
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.82.1064
Abstract
We report on experiments on the rheology of gels formed by diffusion-limited aggregation of neutrally buoyant colloidal particles. These gels form very weak solids, with the elastic modulus, G'(omega), larger than the loss modulus, G "(omega), and with both G'(omega) and G "(omega) exhibiting only a very weak frequency dependence. Upon small but finite strains gamma < 0.45 the elastic modulus increases roughly exponentially with gamma(2). We explain the observed strain hardening with the highly nonlinear elastic response of the rigid backbone of the gel to elongational deformation.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Science > Physics |
| Library of Congress Subject Headings (LCSH): | Colloids, Strain hardening, Fractals, Rheology |
| Journal or Publication Title: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| Official Date: | 1 February 1999 |
| Volume: | Vol.82 |
| Number: | No.5 |
| Number of Pages: | 4 |
| Page Range: | pp. 1064-1067 |
| Identification Number: | 10.1103/PhysRevLett.82.1064 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/14901 |
Data sourced from Thomson Reuters' Web of Knowledge
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