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Neutron Reflectivity Study of Free-End Distribution in Polymer Brushes

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Physics Department, University of Patras, Greece 26500
Laboratoire Leon Brillouin, CEA SACLAY, 91191 Gif-sur-Yvette Cedex, France
§ Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece
*Corresponding author. E-mail: [email protected]
Cite this: Macromolecules 2009, 42, 16, 6209–6214
Publication Date (Web):July 10, 2009
Copyright © 2009 American Chemical Society

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    Abstract Image

    In this study, the free-end distribution of a polystyrene self-assembled brush in good solvent (toluene-d) is directly probed by use of neutron reflectometry. This is accomplished by the selective deuterium enrichment of polystyrene chains so that all but the last 16% of the monomers of each chain are contrast-matched to the solvent. Thus, only these unlabeled terminal monomers are effectively “visible” to the neutrons. The analysis of the experimental results supports the picture that free ends are not localized at the brush height, but are distributed throughout the brush in agreement with previous theoretical and simulation studies. Detailed comparison is made between the experimentally determined free-end profiles and those predicted by self-consistent field theoretical and simulation models.

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    Cited By

    This article is cited by 20 publications.

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    15. Fabrice Cousin, Alexis Chennevière, , . Neutron reflectivity for soft matter. EPJ Web of Conferences 2018, 188 , 04001.
    16. Liuchun Zheng, Harihara S. Sundaram, Zhiyong Wei, Chuncheng Li, Zhefan Yuan. Applications of zwitterionic polymers. Reactive and Functional Polymers 2017, 118 , 51-61.
    17. Motoyasu KOBAYASHI. Characterization of Interfacial Structure of Polymer Brushes by Neutron Reflectivity Measurement. Journal of The Adhesion Society of Japan 2016, 52 (8) , 249-254.
    18. Ang Li, Shivaprakash N. Ramakrishna, Prathima C. Nalam, Edmondo M. Benetti, Nicholas D. Spencer. Stratified Polymer Grafts: Synthesis and Characterization of Layered ‘Brush’ and ‘Gel’ Structures. Advanced Materials Interfaces 2014, 1 (1)
    19. S. Michael Kilbey, John F. Ankner. Neutron reflectivity as a tool to understand polyelectrolyte brushes. Current Opinion in Colloid & Interface Science 2012, 17 (2) , 83-89.
    20. Tarik Matrab, Fanny Hauquier, Catherine Combellas, Frédéric Kanoufi. Scanning Electron Microscopy Investigation of Molecular Transport and Reactivity within Polymer Brushes. ChemPhysChem 2010, 11 (3) , 670-682.

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