Stretching a single diblock copolymer in a selective solvent: Langevin dynamics simulations

Scott A. Edwards*, David R.M. Williams

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    Using the Langevin dynamics technique, we have carried out simulations of a single-chain flexible diblock copolymer. The polymer consists of two blocks of equal length, one very poorly solvated and the other close to θ-conditions. We study what happens when such a polymer is stretched, for a range of different stretching speeds, and correlate our observations with features in the plot of force vs extension. We find that at slow speeds this force profile does not increase monotonically, in disagreement with earlier predictions, and that at high speeds there is a strong dependence on which end of the polymer is pulled, as well as a high level of hysteresis.

    Original languageEnglish
    Pages (from-to)10590-10595
    Number of pages6
    JournalMacromolecules
    Volume38
    Issue number25
    DOIs
    Publication statusPublished - 13 Dec 2005

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