The mean end‐to‐end distances for linear polymers of 101 segments has been computed for nonintersecting random walks on a five‐choice cubic lattice on which a second chain is also present, as a function of the distance between the two chains (i.e., polymer concentration). The polymer dimensions appear to decrease with concentration, linearly at first and then more slowly. The results compare favorably with experiment and with some of the approximate analytic theories and poorly with others.
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Bluestone et al. (1964) studied this question.
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