Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
1997-06-23
Physics
Condensed Matter
Soft Condensed Matter
4 pages
Scientific paper
10.1103/PhysRevLett.79.3688
Dynamical properties of vulcanized polymer networks are addressed via a Rouse-type model that incorporates the effect of permanent random crosslinks. The incoherent intermediate scattering function is computed in the sol and gel phases, and at the vulcanization transition between them. At any nonzero crosslink density within the sol phase Kohlrausch relaxation is found. The critical point is signalled by divergence of the longest time-scale, and at this point the scattering function decays algebraically, whereas within the gel phase it acquires a time-persistent part identified with the gel fraction.
Broderix Kurt
Goldbart Paul M.
Zippelius Annette
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