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.
Related URLs:
http://link.aps.org/doi/10.1103/PhysRevLett.95.048302
ISSN: 0031-9007 (Print) 0031-9007 (Linking)
Accession Number: 16090846