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Spontaneous bending of 2D molecular bottle-brush

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Abstract.

Using a scaling approach we consider a 2D comb copolymer brush under bending deformations. We show that the rectilinear brush is locally stable and can be characterized by a persistence length λ increasing with the molecular weight of grafting side chains as λ ∼ M3. A bending instability due to redistribution of the side chains appears in the non-linear regime where bending is strong. Arguments are presented that the brush conformations consist of alternating rectilinear and bent sections corresponding to the different free-energy minima.

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Authors and Affiliations

  1. Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991, Moscow, Russia

    A. Subbotin

  2. Laboratory of Polymer Chemistry and Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands

    A. Subbotin, J. de Jong & G. ten Brinke

Authors
  1. A. Subbotin
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  2. J. de Jong
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  3. G. ten Brinke
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Correspondence to G. ten Brinke.

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Subbotin, A., de Jong, J. & ten Brinke, G. Spontaneous bending of 2D molecular bottle-brush. Eur. Phys. J. E 20, 99–108 (2006). https://doi.org/10.1140/epje/i2005-10122-7

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  • DOI: https://doi.org/10.1140/epje/i2005-10122-7

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