SKM 2021 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 8: Poster Session III

CPP 8.7: Poster

Mittwoch, 29. September 2021, 17:30–19:30, P

Colloidal layer formation and imbibition of colloidal inks on and in thin cellulose films — •Constantin Harder1,2, Marie Betker1,3, Alexakis E. Alexakis3, Andrei Chumakov1, Benedikt Sochor1, Elisabeth Erbes1,4, Marc Gensch1,2, Qing Chen1, Julian Heger2, Jan Rubeck1, Calvin Brett1,3, Matthias Schwartzkopf1, Eva Malmström3, Daniel Söderberg3, Peter Müller-Buschbaum2, and Stephan Roth1,31DESY, Hamburg, Germany — 2Lehrstuhl für Funktionelle Materialien, TUM, Garching, Germany — 3KTH, Stockholm, Sweden — 4Institute for X-ray Physics, Goettingen University, Goettingen, Germany

Layer formation and annealing of nanoparticles especially colloidal inks applied to porous materials is very relevant for functional coatings and printing. The goal is to distinguish and quantify the differences in structure formation during annealing of deposited colloidal inks on a porous material. Therefore, we use layers of cellulose nano fibers (CNF) as porous media. We use novel colloidal inks consisting of poly-butylmethacrylate (PBMA) and poly-sobrerolmethacrylate (PSobMA) in aqueous solution. We studied the deposition and the subsequent structural and morphological changes during annealing of the colloidal layers in real-time. During deposition 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. Our results show that the CNF- and colloidal layer will change if the glass transition temperature of the colloids is exceeded.

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