Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 411128
Title Conformations and solution properties of star-branched polyelectrolytes
Author(s) Borisov, O.V.; Zhulina, E.B.; Leermakers, F.A.M.; Ballauff, M.; Muller, A.H.E.
Source In: Self organized nanostructures of amphiphilic block copolymers I / Müller, A.H.E., Berlin : Springer (Advances in polymer science 241) - ISBN 9783642224850 - p. 1 - 55.
Department(s) Physical Chemistry and Colloid Science
Publication type Peer reviewed book chapter
Publication year 2011
Keyword(s) block-copolymer micelles - consistent-field theory - poly(methacrylic acid) brushes - molecular-dynamics simulations - modified poly(ethylene oxide) - angle neutron-scattering - monte-carlo-simulation - aqueous-solutions - polymer brushes - ionic-strength
Abstract Aqueous solutions of star-like polyelectrolytes (PEs) exhibit distinctive features that originate from the topological complexity of branched macromolecules. In a salt-free solution of branched PEs, mobile counterions preferentially localize in the intramolecular volume of branched macroions. Counterion localization manifests itself in a dramatic reduction of the osmotic coefficient in solutions of branched polyions as compared with those of linear PEs. The intramolecular osmotic pressure, created by entrapped counterions, imposes stretched conformations of branches and this leads to dramatic intramolecular conformational transitions upon variations in environmental conditions. In this chapter, we overview the theory of conformations and stimuli-induced conformational transitions in star-like PEs in aqueous solutions and compare these to the data from experiments and Monte Carlo and molecular dynamics simulations.
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