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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 29: Interfaces and Thin Films
CPP 29.5: Talk
Wednesday, March 29, 2023, 10:45–11:00, MER 02
Layer-by-Layer Spray-deposition of Cellulose and Lignin — •Shouzheng Chen1,2, Constantin Harder1,3, Iuliana Ribca4, Luciana Pluntke1,5, Markus Oberthuer5, Mats Johansson4, Julien Navarro2, and Stephan V. Roth1,4 — 1DESY, 22607 Hamburg, Germany — 2University Hamburg, 20146 Hamburg, Germany — 3TUM School of Natural Sciences, Chair for Functional Materials, 85748 Garching, Germany — 4KTH Royal Institute of Technology, 10044 Stockholm, Sweden — 5HAW,Department Design, 22087 Hamburg, Germany
Cellulose and lignin are the main chemical components of wood and can be further processed and purified into more valuable chemical raw materials such as cellulose nanofibrils (CNF), Kraft lignin and lignosulfonate. Using the idea of a bottom-up approach, CNF-Lignin composite films were prepared by layer-by-layer (LbL) spray-deposition with CNF and different lignins. CNFs provide a three-dimensional porous network structure, and lignin molecules are attached to the structure of CNF to form a homogeneous structure. In addition, Kraft lignin and lignin derivatives contain a large number of phenolic hydroxyl groups, which might be preferential for thermoelectricity. Thus, CNF-Lignin composite film is an ideal template for composite functional materials.