Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 263-272 |
| Number of pages | 10 |
| Journal | Journal of Membrane Science |
| Volume | 578 |
| Early online date | 9 Oct 2018 |
| DOIs | |
| Publication status | Published - 15 May 2019 |
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Keywords
- Anti-fouling
- Electrically tuneable membrane
- Polyaniline
- Polymer acid dopant
- Stimuli responsive membrane
ASJC Scopus subject areas
- Biochemistry
- Materials Science(all)
- Physical and Theoretical Chemistry
- Filtration and Separation
Cite this
Flexible electro-responsive in-situ polymer acid doped polyaniline membranes for permeation enhancement and membrane fouling removal. / Xu, Li Li; Shahid, Salman; Patterson, Darrell Alec; Emanuelsson, Emma Anna Carolina.
In: Journal of Membrane Science, Vol. 578, 15.05.2019, p. 263-272.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Flexible electro-responsive in-situ polymer acid doped polyaniline membranes for permeation enhancement and membrane fouling removal
AU - Xu, Li Li
AU - Shahid, Salman
AU - Patterson, Darrell Alec
AU - Emanuelsson, Emma Anna Carolina
PY - 2019/5/15
Y1 - 2019/5/15
N2 - This study investigates the performance of a new electrically tuneable polyaniline (PANI) membrane, and shows that this synthesis method has the potential to address key challenges of small-acid doped PANI membranes, including: acid dopants leaching out during filtration and low mechanical strength. The novel in-situ polymerisation used poly (2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA), as polymer acid template leads to the formation of inter-polymer complexes of PANI and polymer acid. The developed membranes were comprehensibly evaluated through visual, chemical, mechanical and filtration studies and compared to small-acid doped membranes (PANI-HCl membranes). The PANI-PAMPSA membranes were smooth, acid leach resistant, had higher tensile strength and showed conductivity three magnitudes higher compared to PANI membrane with post cast doping. The developed membrane showed in-filtration performance stability, electrical tuneability (in-situ control of flux and rejection) and fouling removal characteristics under applied electrical potential. Data obtained by SEM, IR spectroscopy, electrical analysis and cross-flow filtration confirm these results. The overall results showed that the proposed membrane fabrication procedure resulted in a significant improvement in performance across a range of critical parameters, including conductivity, stability, flexibility, permeance and fouling removal with additional advantage of being electrically tuneable.
AB - This study investigates the performance of a new electrically tuneable polyaniline (PANI) membrane, and shows that this synthesis method has the potential to address key challenges of small-acid doped PANI membranes, including: acid dopants leaching out during filtration and low mechanical strength. The novel in-situ polymerisation used poly (2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA), as polymer acid template leads to the formation of inter-polymer complexes of PANI and polymer acid. The developed membranes were comprehensibly evaluated through visual, chemical, mechanical and filtration studies and compared to small-acid doped membranes (PANI-HCl membranes). The PANI-PAMPSA membranes were smooth, acid leach resistant, had higher tensile strength and showed conductivity three magnitudes higher compared to PANI membrane with post cast doping. The developed membrane showed in-filtration performance stability, electrical tuneability (in-situ control of flux and rejection) and fouling removal characteristics under applied electrical potential. Data obtained by SEM, IR spectroscopy, electrical analysis and cross-flow filtration confirm these results. The overall results showed that the proposed membrane fabrication procedure resulted in a significant improvement in performance across a range of critical parameters, including conductivity, stability, flexibility, permeance and fouling removal with additional advantage of being electrically tuneable.
KW - Anti-fouling
KW - Electrically tuneable membrane
KW - Polyaniline
KW - Polymer acid dopant
KW - Stimuli responsive membrane
UR - http://www.scopus.com/inward/record.url?scp=85055568828&partnerID=8YFLogxK
U2 - 10.1016/j.memsci.2018.09.070
DO - 10.1016/j.memsci.2018.09.070
M3 - Article
VL - 578
SP - 263
EP - 272
JO - Journal of Membrane Science
JF - Journal of Membrane Science
SN - 0376-7388
ER -