Abstract
IN dilute solutions polymer molecules are present as dispersed coils, separated from each other by pure solvent. In concentrated solutions coils are entangled; their volumes are overlapping and the mixture is homogeneous. In the first case only intramolecular polymer-polymer interactions occur, but in the latter intermolecular interactions take place as well1. Transition between both situations should occur at concentrations at which the volume of the solution is roughly equal to the sum of the volumes of polymer coils. In a theoretical treatment the transition between dilute and semi-dilute regimes has been described2 and recently neutron and light scattering data were claimed to support this transition3.
Published Version
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