Time-Dependent Strength of Colloidal Gels
Manley, S., et al. (2005). "Time-Dependent Strength of Colloidal Gels." Physical Review Letters 95 4: 048302
Colloidal silica gels are shown to stiffen with time, as demonstrated by both dynamic light scattering and bulk rheological measurements. Their elastic moduli increase as a power law with time, independent of particle volume fraction; however, static light scattering indicates that there are no large-scale structural changes. We propose that increases in local elasticity arising from bonding between neighboring colloidal particles can account for the strengthening of the network, while preserving network structure.
ISSN: 0031-9007 (Print) 0031-9007 (Linking)
Accession Number: 16090846