Regensburg 2019 – wissenschaftliches Programm
CPP 25.36: Poster
Dienstag, 2. April 2019, 14:00–16:00, Poster B1
Boehmite Microcrystal Growth and its Interaction with Polymers at the Interface. — •Mateusz Dudziak, Dorothee Silbernagl, and Heinz Sturm — Bundesanstalt für Materialforschung und prüfung (BAM), Berlin, Germany
Nanocomposites are extremely versatile due to their physicochemical properties, which differ significantly from bulk homopolymers. One of the inorganic nanomaterials, which is increasingly used as a filler in polymer matrices is boehmite, due to its flame-retardant properties. Here, it is utilized as a nanofiller in polycarbonate and polyamide, expecting to improve their mechanical properties. For industrial use boehmite is obtained by the solvothermal method, resulting in a layered nanomaterial, whereas naturally it occurs as single crystals with the size of <50*m. In this work we are obtaining and isolating boehmite monocrystals by a bottom-up method, in which a reaction between aluminum salts and hydroxides takes place in a polymer gel. Obtaining boehmite as microcrystals is necessary for its analysis and characterization, as well as to investigate its interaction with polymer matrices at the polymer/particle interface. Here, the obtained particles are characterized by small- and wide-angle X-ray scattering and further in polymer matrices with differential scanning calorimetry and intermodulation atomic force microscopy (ImAFM), probing local stiffness.