Publications

Epoxy Resin Nanocomposites: The Influence of Interface Modification on the Dispersion Structure—A Small-Angle-X-ray-Scattering Study

Author(s)
Bernhard Feichtenschlager, Silvia Pabisch, Jakob Svehla, Herwig Peterlik, Muhammad Sajjad, Thomas Koch, Guido Kickelbick
Abstract

The surface functionalization of inorganic nanoparticles is an important tool for the production of homogeneous nanocomposites. The chemical adaptation of the nano-filler surface can lead to effective weak to strong interactions between the fillers and the organic matrix. Here we present a detailed systematic study of different surface-functionalized particles in combination with a SAXS method for the systematic investigation of the interface interaction in the development of epoxy nanocomposites. We investigated the effect of surface modification of spherical SiO2 nanoparticles with 9 nm and 72 nm diameter and crystalline ZrO2 nanoparticles with 22 nm diameter on the homogeneous distribution of the fillers in diethylenetriamine (DETA) cured bisphenol-F-diglycidylether epoxy resin nanocomposites. Unmodified nanoparticles were compared with surface-modified oxides having diethylene glycol monomethyl ethers (DEG), 1,2-diols, or epoxy groups attached to the surface. The influence of surface modification on dispersion quality was investigated by transmission electron microscopy (TEM) and small angle X-ray scattering (SAXS) for inorganic filler contents of 3, 5 and 10 wt%. It was shown that the dispersion quality can be optimized by varying the coupling agent end group to obtain homogeneous and transparent nanomaterials. UV/VIS measurements confirmed the transparency/translucency of the obtained materials. The relationship between particle–matrix interaction and particle–particle interaction plays a decisive role in homogeneity and is controlled by the surface groups as well as by the type, size, and morphology of the nanoparticles themselves.

Organisation(s)
Dynamics of Condensed Systems
External organisation(s)
Technische Universität Wien, Universität des Saarlandes
Journal
Surfaces
Volume
3
Pages
664-682
No. of pages
19
ISSN
2571-9637
DOI
https://doi.org/10.3390/surfaces3040044
Publication date
12-2020
Peer reviewed
Yes
Austrian Fields of Science 2012
103018 Materials physics, 103020 Surface physics
Portal url
https://ucris.univie.ac.at/portal/en/publications/epoxy-resin-nanocomposites-the-influence-of-interface-modification-on-the-dispersion-structurea-smallanglexrayscattering-study(ab63fc21-fbfd-4c15-b2e8-9249bc97f3f8).html