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Topological Paths and Transient Morphologies during Formation of Mesoporous Block Copolymer Membranes

Title data

Stegelmeier, Corinna ; Filiz, Volkan ; Abetz, Volker ; Perlich, Jan ; Fery, Andreas ; Ruckdeschel, Pia ; Rosenfeldt, Sabine ; Förster, Stephan:
Topological Paths and Transient Morphologies during Formation of Mesoporous Block Copolymer Membranes.
In: Macromolecules. Vol. 47 (August 2014) Issue 16 . - pp. 5566-5577.
ISSN 0024-9297
DOI: https://doi.org/10.1021/ma5004908

Official URL: Volltext

Abstract in another language

We systematically investigated the structure formation pathways and transient morphologies involved in the formation of mesoporous membranes by the self-assembly of block copolymers during nonsolvent-induced phase separation. Using AFM, SEM, and in situ synchrotron SAXS, we mapped the topological paths and characteristic transient structures into a ternary phase diagram. We focused on the stability region of an ordered pore phase which is relevant for the generation of integral asymmetric isoporous membranes. We could identify several characteristic morphologies, i.e., spinodal networks, sphere percolation networks, ordered pore structures, and disordered and ordered cylinder arrangements together with transient structures connecting their stability regions. With given evaporation rates for the pure solvents, we calculated the corresponding composition trajectories in the phase diagram to identify suitable experimental conditions in terms of initial polymer volume fraction, solvent composition, and immersion time to trap the desired pore structure.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry II - Univ.-Prof. Dr. Andreas Fery
Research Institutions > Collaborative Research Centers, Research Unit > SFB 840 Von partikulären Nanosystemen zur Mesotechnologie
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Research Institutions
Research Institutions > Collaborative Research Centers, Research Unit
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 05 Dec 2014 09:22
Last Modified: 22 Jan 2018 08:46
URI: https://eref.uni-bayreuth.de/id/eprint/3922