An analysis of the cylindical brush of an isolated comb copolymer molecule consisting of a semiflexible backbone and flexible side chains is presented. Using the Alexander−de Gennes approximation, we calculate the free energy of both straight and bent cylindrical brush and the brush persistence length λ, and show that λ scales as a function of the side chain length M as λ ∝ M 2 . The discrepancy between the asymptotic scaling behavior and recent computer simulation results is also discussed.
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Subbotin et al. (2000) studied this question.
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