Abstract
Viscoelastic measurements on gels near the gel point show power-law frequency and time dependences. Using a percolation model, we find that viscoelastic properties are described by the universal exponent where is viscosity exponent, is the correlation-length exponent, and is the dimension of space. This expression leads to a theory for the critical growth of the equilibrium shear modulus beyond the gel point, and the steady-state creep compliance beneath the gel point. Viscoelastic data are given for epoxy resins.
- Received 16 September 1988
DOI:https://doi.org/10.1103/PhysRevLett.61.2620
©1988 American Physical Society