Please use this identifier to cite or link to this item: doi:10.22028/D291-41475
Title: Polyacrylonitrile-containing amphiphilic block copolymers: self-assembly and porous membrane formation
Author(s): Gemmer, Lea
Niebuur, Bart-Jan
Dietz, Christian
Rauber, Daniel
Plank, Martina
Frieß, Florian V.
Presser, Volker
Stark, Robert W.
Kraus, Tobias
Gallei, Markus
Language: English
Title: Polymer Chemistry
Volume: 14
Issue: 42
Publisher/Platform: Royal Society of Chemistry
Year of Publication: 2023
DDC notations: 500 Science
Publikation type: Journal Article
Abstract: The development of hierarchically porous block copolymer (BCP) membranes via the application of the self-assembly and non-solvent induced phase separation (SNIPS) process is one important achievement in BCP science in the last decades. In this work, we present the synthesis of polyacrylonitrile-containing amphiphilic BCPs and their unique microphase separation capability, as well as their applicability for the SNIPS process leading to isoporous integral asymmetric membranes. Poly(styrene-co-acrylonitrile)-bpoly(2-hydroxyethyl methacrylate)s (PSAN-b-PHEMA) are synthesized via a two-step atom transfer radical polymerization (ATRP) procedure rendering PSAN copolymers and BCPs with overall molar masses of up to 82 kDa while maintaining low dispersity index values in the range of Đ = 1.13–1.25. The polymers are characterized using size-exclusion chromatography (SEC) and NMR spectroscopy. Self-assembly capabilities in the bulk state are examined using transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS) measurements. The fabrication of isoporous integral asymmetric membranes is investigated, and membranes are examined by scanning electron microscopy (SEM). The introduction of acrylonitrile moieties within the membrane matrix could improve the membranes’ mechanical properties, which was confirmed by nanomechanical analysis using atomic force microscopy (AFM).
DOI of the first publication: 10.1039/D3PY00836C
URL of the first publication:
Link to this record: urn:nbn:de:bsz:291--ds-414752
ISSN: 1759-9962
Date of registration: 22-Jan-2024
Description of the related object: Electronic supplementary information
Related object:
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Chemie
NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Markus Gallei
NT - Prof. Dr. Christopher Kay
NT - Prof. Dr. Tobias Kraus
NT - Prof. Dr. Volker Presser
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

Files for this record:
File Description SizeFormat 
d3py00836c.pdf4,03 MBAdobe PDFView/Open

This item is licensed under a Creative Commons License Creative Commons