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Modulation of the internal structure and surface properties of natural and synthetic polymer matrices by graphene oxide doping

  • Controlling the surface properties and structure of thin nanosized coatings is of primary importance in diverse engineering and medical applications. Here we report on how the nanostructure, growth mechanism, thickness, roughness, and hydrophilicity of nanocomposites composed of weak natural or strong synthetic polyelectrolytes (PE) can be tailored by graphene oxide (GO) doping. GO reverses the build‐up mechanism affecting the internal structure and the hydrophilicity in a way depending on the type of the PE‐matrix. The extent of GO‐adsorption and its impact on the surface morphology was found to be independent on the type of the underlying PE‐matrix. The nanostructure of the hybrid films is not significantly altered when a single surface‐exposed GO‐layer is deposited, while increasing the number of embedded GO‐layers leads to pronounced surface heterogeneity. These results are expected to have valuable impact on the construction strategies of coatings with tunable surface properties.

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Author of HS ReutlingenAndreeva, Tonya; Krastev, Rumen
Erschienen in:Polymers for advanced technologies
Place of publication:New York
Document Type:Journal article
Publication year:2020
Tag:composite materials; graphene oxide; polyelectrolyte multilayers; thin coatings
Page Number:9
First Page:1562
Last Page:1570
DDC classes:540 Chemie
Open access?:Nein
Licence (German):License Logo  In Copyright - Urheberrechtlich geschützt