scholarly journals Aquaporin-Containing Proteopolymersomes in Polyelectrolyte Multilayer Membranes

Membranes ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 103
Author(s):  
Dennis M. Reurink ◽  
Fei Du ◽  
Radosław Górecki ◽  
Hendrik D.W. Roesink ◽  
Wiebe M. de Vos

The field of membranes saw huge developments in the last decades with the introduction of both polyelectrolyte multilayer (PEM)-based membranes and biomimetic membranes. In this work, we combine these two promising systems and demonstrate that proteopolymersomes (PP+) with the incorporated aquaporin protein can be distributed in a controlled fashion using PEMs, even on the inner surface of a hollow fiber membrane. In this way, various proteopolymersome multilayers (PPMs) are fabricated using PP+ as the positively charged species in combination with the polyanions poly(styrene 4-sulfonate) (PSS) and poly(acrylic acid) (PAA). It is shown by reflectometry through alternately adsorbing the polyanions and PP+ that, for both PAA and PSS, a good layer growth is possible. However, when the multilayers are imaged by SEM, the PAA-based PPMs show dewetting, whereas vesicular structures can only be clearly observed in and on the PSS-based PPMs. In addition, membrane permeability decreases upon coating the PPMs to 2.6 L∙m−2∙h−1∙bar−1 for PAA/PP+ and 7.7 L∙m−2∙h−1∙bar−1 for PSS/PP+. Salt retentions show that PAA/PP+ layers are defective (salt retentions <10% and high molecular weight cut-off (MWCO)), in line with the observed dewetting behavior, while PPMs based on PSS show 80% MgSO4 retention in combination with a low MWCO. The PSS/PP+ membranes show a Donnan-exclusion behavior with moderate MgCl2 retention (50%–55%) and high Na2SO4 retention (85%–90%) indicating a high amount of negative charge present within the PPMs. The corresponding PEMs, on the other hand, are predominately positively charged with MgCl2 retention of 97%–98% and Na2SO4 retention of 57%–80%. This means that the charge inside the multilayer and, thus, its separation behavior can be changed when PP+ is used instead of a polycation. When comparing the PPM membranes to the literature, similar performances are observed with other biomimetic membranes that are not based on interfacial polymerization, but these are the only ones prepared using a desired hollow fiber geometry. Combining PEMs and biomimetic approaches can, thus, lead to relevant membranes, especially adding to the versatility of both systems.

2013 ◽  
Vol 781-784 ◽  
pp. 2040-2046
Author(s):  
Alsamani A. M. Salih ◽  
Chun Hai Yi ◽  
Bo Lun Yang ◽  
Peng Chen

PEAm-TMC/PDMS/PVC composite hollow fiber membrane for CO2 separation was developed through interfacial polymerization (IP) on the PDMS pre-coated inner surface of PVC hollow fiber. Polyetheramine (PEAm) and Trimesoyl chloride (TMC) were selected as aqueous monomer and organic monomer, respectively. SEM observation result shows that the thickness of PEAm-TMC IP layer is about 215 nm. The effects of monomer concentrations and acid acceptor concentration on the membrane performance were investigated. The results shows that the CO2 permeance decareses and CO2/N2 selectivity increases with the increasing concentrations of PEAm, TMC and Na2CO3. At 0.12 MPa, the composite hollow fiber membrane possesses a very high CO2 permeance of 964 GPU and CO2/N2 selectivity of 40.6.


2018 ◽  
Vol 551 ◽  
pp. 261-272 ◽  
Author(s):  
Hui-An Tsai ◽  
Ya-Ling Chen ◽  
Shu-Hsien Huang ◽  
Chien-Chieh Hu ◽  
Wei-Song Hung ◽  
...  

2010 ◽  
Vol 154-155 ◽  
pp. 1800-1803
Author(s):  
Guo Yang Shi ◽  
Jun Fu Wei ◽  
Kong Yin Zhao ◽  
Huan Zhang ◽  
Xiao Lei Wang ◽  
...  

1994 ◽  
Vol 94 (1) ◽  
pp. 249-254 ◽  
Author(s):  
Arvind Parthasarathy ◽  
Charles J. Brumlik ◽  
Charles R. Martin ◽  
George E. Collins

2016 ◽  
Vol 4 (15) ◽  
pp. 5592-5604 ◽  
Author(s):  
Pravin G. Ingole ◽  
Muhammad Irshad Baig ◽  
Won Kil Choi ◽  
Hyung Keun Lee

In this study, we report the synthesis of thin film nanocomposite (TFN) membranes by interfacial polymerization (IP) on porous polysulfone (PSf) hollow fiber membrane supports.


Desalination ◽  
2015 ◽  
Vol 369 ◽  
pp. 26-36 ◽  
Author(s):  
Xianhui Li ◽  
Chunjin Zhang ◽  
Shuning Zhang ◽  
Jianxin Li ◽  
Benqiao He ◽  
...  

2006 ◽  
Vol 930 ◽  
Author(s):  
Ian D. Norris ◽  
Malcolm C. Morrison ◽  
Benjamin R. Mattes

ABSTRACTHigh flux composite hollow fiber membranes for brackish water desalination based on the interfacial polymerization of a cross-linked polyamide salt rejecting layer onto a semi-permeable hollow fiber support have been developed. These hollow fiber membranes exploit the advantages of using a thin-film composite reverse osmosis membrane (higher flux and salt rejection) with the higher surface area/volume ratio of hollow fiber membrane elements. The composite hollow fiber membranes were prepared by coating a polysulfone hollow fiber with a polyamide salt rejecting layer based on the interfacial polymerization reaction between m-phenylenediamine and trimesoyl chloride/isophthaloyl dichloride. The RO figures-of-merit of these composite polyamide hollow fiber membranes were evaluated for the desalination of a synthetic brackish water feed (2,000 ppm NaCl) at 225 psi over a 60 hour period. After an initial break-in period in which the flux declined 30% due to membrane compaction, the stabilized RO figures-of-merit for these hollow fiber membranes were a water flux of 280 L/m2·day and a salt rejection of 99.1%. Based on the water flux and packing density of the membrane, it is estimated that the stable production of potable water of a hollow fiber membrane element containing these composite membranes will be between 20 and 30% greater than that of a similarly sized spiral wound brackish water membrane element.


Desalination ◽  
2014 ◽  
Vol 350 ◽  
pp. 44-52 ◽  
Author(s):  
Xiuzhen Wei ◽  
Songxue Wang ◽  
Yingying Shi ◽  
Hai Xiang ◽  
Jinyuan Chen ◽  
...  

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