TY - JOUR
T1 - Incorporation of an Intermediate Polyelectrolyte Layer for Improved Interfacial Polymerization on PAI Hollow Fiber Membranes
AU - Restrepo, Maria A.
AU - Mohammadifakhr, Mehrdad
AU - Kamp, Johannes
AU - Trzaskus, Krzysztof
AU - Kemperman, Antoine J.B.
AU - de Grooth, Joris
AU - Roesink, Hendrik D.W.
AU - Roth, Hannah
AU - Wessling, Matthias
N1 - Funding Information:
This work was founded by Aquaporin A/S in Denmark and the TKI HTSM: University of Twente Impulse program in the Netherlands. This work was performed in part at the Center for Chemical Polymer Technology CPT, which is supported by the EU and the federal state of North Rhine-Westphalia (grant no. EFRE 30 00 883 02). M.W. acknowledges DFG funding through the Gottfried Wilhelm Leibniz Award 2019 (WE 4678/12-1). This project has received funding from the European Research Council under the European Union’s Horizon 2020 research and innovation program (grant agreement no. 694946). M.W. appreciates the support from the Alexander von Humboldt foundation.
Publisher Copyright:
© 2023 by the authors.
PY - 2023/8
Y1 - 2023/8
N2 - In a single-step spinning process, we create a thin-walled, robust hollow fiber support made of Torlon® polyamide-imide featuring an intermediate polyethyleneimine (PEI) lumen layer to facilitate the integration and covalent attachment of a dense selective layer. Subsequently, interfacial polymerization of m-phenylenediamine and trimesoyl chloride forms a dense selective polyamide (PA) layer on the inside of the hollow fiber. The resulting thin-film composite hollow fiber membranes show high NaCl rejections of around 96% with a pure water permeability of (Formula presented.) LMH/bar. The high success rate of fabricating the thin-film composite hollow fiber membrane proves our hypothesis of a supporting effect of the intermediate PEI layer on separation layer formation. This work marks a step towards the development of a robust method for the large-scale manufacturing of thin-film composite hollow fiber membranes for reverse osmosis and nanofiltration.
AB - In a single-step spinning process, we create a thin-walled, robust hollow fiber support made of Torlon® polyamide-imide featuring an intermediate polyethyleneimine (PEI) lumen layer to facilitate the integration and covalent attachment of a dense selective layer. Subsequently, interfacial polymerization of m-phenylenediamine and trimesoyl chloride forms a dense selective polyamide (PA) layer on the inside of the hollow fiber. The resulting thin-film composite hollow fiber membranes show high NaCl rejections of around 96% with a pure water permeability of (Formula presented.) LMH/bar. The high success rate of fabricating the thin-film composite hollow fiber membrane proves our hypothesis of a supporting effect of the intermediate PEI layer on separation layer formation. This work marks a step towards the development of a robust method for the large-scale manufacturing of thin-film composite hollow fiber membranes for reverse osmosis and nanofiltration.
KW - chemistry in a spinneret
KW - composite hollow fiber
KW - interfacial polymerization
KW - polyamide-imide
KW - polyelectrolyte interlayer
UR - http://www.scopus.com/inward/record.url?scp=85169039933&partnerID=8YFLogxK
U2 - 10.3390/membranes13080741
DO - 10.3390/membranes13080741
M3 - Article
AN - SCOPUS:85169039933
SN - 2077-0375
VL - 13
JO - Membranes
JF - Membranes
IS - 8
M1 - 741
ER -