Dynamics of weakly aggregated colloidal particles

@article{citeulike:2714466, abstract = {We discuss the behaviour of the dynamics of colloidal particles with a weak attractive interparticle interaction that is induced through the addition of polymer to the solvent. We briefly review the description of their behaviour in terms of the jamming phase diagram, which parametrized the fluid-to-solid transition due to changes in volume fraction, attractive energy or applied stress. We focus on a discussion of ageing of the solid gels formed by these colloid-polymer mixtures. They exhibit a delayed collapse induced by gravity. The time evolution of the height of the sediment exhibits an unexpected scaling behaviour, suggesting a universal nature to this delayed collapse. We complement these measurements of the scaling of the collapse with microscopic investigations of the evolution of the structure of the network using confocal microscopy. These results provide new insight into the origin of this ageing behaviour.}, author = {, and Kilfoil, Maria L. and , and Pashkovski, Eugene E. and , and Masters, James A. and , and Weitz, D. A. }, citeulike-article-id = {2714466}, doi = {10.1098/rsta.2002.1163}, journal = {Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences}, keywords = {aging, gel, gravity, weitz}, month = {April}, number = {1805}, pages = {753--766}, posted-at = {2008-04-24 23:06:57}, priority = {2}, title = {Dynamics of weakly aggregated colloidal particles}, url = {http://dx.doi.org/10.1098/rsta.2002.1163}, volume = {361}, year = {2003} }

TY - JOUR ID - citeulike:2714466 L3 - citeulike-article-id:2714466 TI - Dynamics of weakly aggregated colloidal particles JF - Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences VL - 361 IS - 1805 SP - 753 EP - 766 N2 - We discuss the behaviour of the dynamics of colloidal particles with a weak attractive interparticle interaction that is induced through the addition of polymer to the solvent. We briefly review the description of their behaviour in terms of the jamming phase diagram, which parametrized the fluid-to-solid transition due to changes in volume fraction, attractive energy or applied stress. We focus on a discussion of ageing of the solid gels formed by these colloid-polymer mixtures. They exhibit a delayed collapse induced by gravity. The time evolution of the height of the sediment exhibits an unexpected scaling behaviour, suggesting a universal nature to this delayed collapse. We complement these measurements of the scaling of the collapse with microscopic investigations of the evolution of the structure of the network using confocal microscopy. These results provide new insight into the origin of this ageing behaviour. KW - aging KW - gel KW - gravity KW - weitz AU - Kilfoil, Maria AU - Pashkovski, Eugene AU - Masters, James AU - Weitz, DA PY - 2003/04/15/ UR - http://dx.doi.org/10.1098/rsta.2002.1163 ER -