BPCPPDYSOE21 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 14: Poster Session II - Complex Fluids and Perovskites
CPP 14.6: Poster
Dienstag, 23. März 2021, 16:30–18:30, CPPp
In-situ spraying of Colloids on Cellulose Nanofibers — •Constantin Harder1,2, Marie Betker1,3, Alexandros Alexakis3, Andrei Chumakov1, Elisabeth Erbes1,4, Marc Gensch1,2, Qing Chen1, Jan Rubeck1, Nils Le Coutre5, Calvin J. Brett1,3, Matthias Schwartzkopf1, Eva Malmström3, Daniel Söderberg3, Peter Müller-Buschbaum2, and Stephan V. Roth1,3 — 1Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany — 2Lehrstuhl für Funktionelle Materialien, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany — 3KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden — 4Institute for X-ray Physics, Goettingen University, Friedrich Hund Platz 1, 37077 Goettingen, Germany — 5Universität Rostock, Universitätsplatz 1, 18055 Rostock, Germany
Layer formation and annealing of colloidal inks applied to porous materials is very relevant for printing and functional coatings. The goal is to distinguish and quantify the differences in structure formation during annealing of deposited colloidal inks on a porous and a solid material. As porous template we use a layer of cellulose nano fibers (CNF) with a charged surface. We use novel colloidal inks consisting of poly-butylmethacrylate (PBMA) and poly-sobrerolmethacrylate (PSobMA) with a charged shell in aqueous solution. We studied the deposition and the subsequent structural and morphological changes during annealing of the colloidal layers in real-time using grazing incidence small-angle X-ray scattering (GISAXS). During deposition, we expect that part of the liquid enters the CNF layer while part of the solvent and the colloids remain on top of the nanopaper surface, leading to a complex drying process. Subsequently, the structural changes in the colloidal layer are induced by annealing. With GISAXS we monitor these different processes and their effect on the CNF template.