Neutron investigation of interaction between anionic surfactant micelles and poly (Ethylene glycol) polymer brush system

0547952 - BC 2022 RIV UA eng J - Journal Article
Artykulnyi, O.P. - Avdeev, M.M. - Kosiachkin, Y.M. - Petrenko, V.I. - Šafařík, Ivo - Bulavin, L. A.
Neutron investigation of interaction between anionic surfactant micelles and poly (Ethylene glycol) polymer brush system.
Nuclear Physics and Atomic Energy. Roč. 22, č. 2 (2021), s. 149-156. ISSN 1818-331X. E-ISSN 2074-0565
Institutional support: RVO:60077344
Keywords : anionic surfactants * micelles * neutron reflectometry * poly (ethylene glycol) * polymer brush * small-angle neutron scattering
OECD category: Materials engineering
Method of publishing: Open access
http://jnpae.kinr.kiev.ua/22.2/Articles_PDF/jnpae-2021-22-0149-Artykulnyi.pdf

A polymer brush system of a neutral polymer poly (ethylene glycol) with a molecular weight of Mw = 20 kDa on silicon substrates in an aqueous medium was studied by the specular neutron reflectometry. Structural changes in the density profile of a polymer brush caused by the interaction of polymer chains with micelles of the anionic surfactant dodecylbenzenesulfonate acid were observed. The effect is shown to be related to the formation of molecular polymer-micelle associates in the bulk of the solution, which was previously studied by small-angle neutron scattering in a wide range of surfactant concentrations at various molecular weights of the polymer. The density of the dry polymer layer on the silicon substrate was additionally characterized by X-ray reflectometry and scanning atomic force microscopy.
Permanent Link: http://hdl.handle.net/11104/0324826