Abstract
It is shown that the criteria of space filling expressed by v = φ V c/ V w = constant [where φ, V c and V w are the concentration, the volume of the coil containing the random chain of mass M and the Van der Waals volume of that chain] gives the onset of entanglements in linear and branched melts and in concentrated polymeric solutions (Cornet criteria). In binary melts, containing long and short chains of length N and N 0, this criterion applied to the equivalent chain N/ N 0 gives the experimental concentration φ c above which the long chains are “entangled”, It is emphasized that the notion of entanglement is a relative one This space filling criteria is compared to the other criteria found in the literature.
Published Version
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