THE 2ND OSMOTIC VIRIAL-COEFFICIENT OF POLYMER-SOLUTIONS

The second osmotic virial coefficient, A(2), of chain molecules confin ed to SC, FCC, and diamond lattices was determined by Monte Carlo meth ods. In each case the dependence of A(2) on the chain length follows a power law with nearly identical exponents, which are in accordance wi th the scaling predictions. A fair agreement with the results of other authors for models in the continuous space indicates a universal beha vior.