Nanopore & Membrane Design

a) Membrane architecture

Membrane architecture is a critical parameter to control pressure-free transport and relates as well to local functionalization and step gradient formation. For example layer porosity and thickness design have to be correlated with the range of transport determining interface phenomena such as debye-screening length and wetting. Furthermore, innovative strategies for layer selective functionalization in multilayer systems are investigated.

Currently involved team members: L. Despot, M. Kremer, D. Spiehl

Formerly involved team members: M. Stanzel

Related Publications:

M. Stanzel, U. Kunz, A. Andrieu-Brunsen, Layer-selective functionalisation in mesoporous double layer via iniferter initiated polymerisation for nanoscale step gradient formation, European Poly. J., 2021, 156, 110604.
N. Herzog, R. Brilmayer, M. Stanzel, A. Kalyta, D. Spiehl, E. Doersam, C. Hess, A. Andrieu-Brunsen, Gravure Printing for Mesoporous Film Preparation, RSC Adv., 2019, 9, 23570 – 23578.
J. C. Tom, C. Appel, A. Andrieu-Brunsen, Fabrication and in situ functionalisation of mesoporous silica films by the physical entrapment of functional and responsive block copolymer structuring agents, Soft Matter, 2019, 15, 8077.

b) The role of nanopores in hierarchial material performance

Paper is a complex and strongly hierarchical material. Especially the role of fiber nanoporosity on paper performance is not well understood and almost impossible to control within the paper fabrication process. We use our expertise in the field of nanoporous material fabrication to design and investigate the effect of hierarchical matrix and spatially confined nanopores on paper performance. Together with the paper design expertise of the research group around Prof. M. Biesalski we designed fluid stop barriers fully based with itself hydrophilic materials exclusively by controlling silica deposition, nanopore presence and paper cellulose fiber composition.

Currently involved team members:
J. Mikolai, M. Stanzel

Formerly involved team members:N. Herzog

Related Publications:

C. Dubois, N. Herzog, C. Rüttiger, A. Geissler, E. Grange, U. Kunz, H.-J. Kleebe, M. Biesalski, T. Meckel, T. Gutmann, M. Gallei, A. Andrieu-Brunsen, Fluid Flow Programming in Paper-Derived Silica-Polymer Hybrids, Langmuir, 2017, 33, 332-339.
M. Nau & N. Herzog, J. Schmidt, T. Meckel, A. Andrieu-Brunsen & M. Biesalski , Janus‐Type Hybrid Paper Membranes, Adv. Mater. Interf., 2019, 6, 1900892.
Nau, Herzog, Andrieu-Brunsen, Biesalski DE 102018124255.7, 2018.