Strain hardening of fractal colloidal gels
Gisler, T., Ball, R. C. and Weitz, D. A.. (1999) Strain hardening of fractal colloidal gels. Physical Review Letters, Vol.82 (No.5). pp. 1064-1067. ISSN 0031-9007Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevLett.82.1064
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|
|Date:||1 February 1999|
|Number of Pages:||4|
|Page Range:||pp. 1064-1067|
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