TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Holzdörfer, Uwe
A1  - Ali, Wael
A1  - Schollmeyer, Eckhard
A1  - Gutmann, Jochen S.
A1  - Mayer-Gall, Thomas
A1  - Textor, Torsten
T1  - Novel approach for the preparation of a highly hydrophobic coating material exhibiting self-healing properties
JF  - Molecules
N2  - A concept to prepare a highly hydrophobic composite with self-healing properties has been designed and verified. The new material is based on a composite of a crystalline hydrophobic fluoro wax, synthesized from montan waxes and perfluoroethylene alcohols, combined with spherical silica nanoparticles equipped with a hydrophobic shell. Highly repellent layers were prepared using this combination of a hydrophobic crystalline wax and silica nanoparticles. The novel aspect of our concept was to prepare a ladder-like structure of the hydrophobic shell allowing the inclusion of a certain share of wax molecules. Wax molecules trapped in the hydrophobic structure during mixing are hindered from crystallizing; therefore, these molecules maintain a higher mobility compared to crystallized molecules. When a thin layer of the composite material is mechanically damaged, the mobile wax molecules can migrate and heal the defects to a certain extent. The general preparation of the composite is described and XRD analysis demonstrated that a certain share of wax molecules in the composite are hindered to crystallize. Furthermore, we show that the resulting material can recovery its repellent properties after surface damage.
Y1  - 2024
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:rt2-opus4-52350
SN  - 1420-3049
SS  - 1420-3049
U6  - https://doi.org/10.3390/molecules29163766
DO  - https://doi.org/10.3390/molecules29163766
VL  - 29
IS  - 16
SP  - 1
EP  - 13
S1  - 13
PB  - MDPI
CY  - Basel
ER  -