Thin Isoporous Block Copolymer Membranes: It Is All about the Process

ACS Applied Materials & Interfaces
Janina HahnVolker Abetz

Abstract

The combination of the self-assembly of amphiphilic block copolymers and the nonsolvent induced phase inversion process offers an efficient way to isoporous integral-asymmetric membranes. In this context we report fast, easily upscalable and material reducing ways to thin self-assembled membranes. Therefore, we succeeded to implement a spray or dip coating step into the membrane formation process of different diblock copolymers like polystyrene-block-poly(4-vinylpyridine), poly(α-methylstyrene)-bock-poly(4-vinylpyridine), and polystyrene-block-poly(iso-propylglycidyl methacrylate). The formation of hexagonal pore structures was possible using a highly diluted one solvent system allowing the reduction of diblock copolymer consumption and therefore the production costs are minimized compared to conventional blade casting approaches. The broad applicability of the process was proven by using different flat and hollow fiber support materials. Furthermore, the membranes made by this new method showed a more than 6-fold increase in water flux compared to conventional polystyrene-block-poly(4-vinylpyridine) membranes with similar pore sizes prepared by blade casting. The membranes could be proven to be stable at transmembrane pressure...Continue Reading

References

Nov 6, 2007·Nature Materials·Klaus-Viktor PeinemannPeter F W Simon
Dec 12, 2012·Macromolecular Rapid Communications·Juliana Isabel ClodtVolker Abetz
Feb 13, 2013·Macromolecular Rapid Communications·Adina JungVolker Abetz
Feb 28, 2013·ACS Nano·Majid Ebrahimi WarkianiAnthony Gordon Fane
May 2, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Sanjukta BoseKristoffer Almdal
Nov 22, 2014·Advanced Materials·Maryam Radjabian, Volker Abetz
Dec 3, 2014·Macromolecular Rapid Communications·Volker Abetz

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Citations

Sep 6, 2017·Membranes·Juliana I ClodtSergey Shishatskiy
Nov 11, 2017·Angewandte Chemie·Weiyi ZhangJiayin Yuan
Aug 19, 2016·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Stephan V Roth
Mar 17, 2021·Journal of Colloid and Interface Science·Ameya Krishna BWiebe M de Vos
May 26, 2021·Chemical Reviews·Marcus Müller, Volker Abetz
Jun 1, 2021·Macromolecular Rapid Communications·Md Mushfequr Rahman
Jan 31, 2019·ACS Applied Materials & Interfaces·Rahul ShevateKlaus-Viktor Peinemann
Oct 29, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Shensheng Chen, Xin Yong
Nov 10, 2021·Macromolecular Rapid Communications·Florian V FrießMarkus Gallei

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