Composite ultrafiltration membranes from polymer and its quaternary phosphonium-functionalized derivative with enhanced water flux

Xiaocheng Lin, Kun Wang, Yi Feng, Jefferson Zhe Liu, Xiya Fang, Tongwen Xu, Huanting Wang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Novel ultrafiltration (UF) membranes were prepared by blending brominated poly(phenylene oxide) (BPPO) and its quaternary phosphonium derivative (TPPOQP-Br) as additive using a phase inversion method. The chemical structure and microstructure of the membranes were characterized by Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-IR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The XPS results indicated that the BPPO/TPPOQP-Br composite membranes exhibited an increase in the concentration of TPPOQP-Br from the top surface to the bottom surface. In contrast, the composite membranes prepared from BPPO and its quaternary ammonium derivative (TPPOQA-Br) showed an opposite concentration gradient of TPPOQA-Br. This was attributed to the difference in wettability and hydration rate between TPPOQP-Br and TPPOQA-Br, leading to different membrane microstructure and chemical composition distributions. BPPO membrane showed a water flux of 215Lm-2h-1 at 100kPa and its molecular weight cut-off of PEG is 93.8kDa; the corresponding values of the optimal BPPO/TPPOQP-Br membrane are 873Lm-2h-1 and 111.3kDa, both of which are better than those of BPPO/TPPOQA-Br with the similar additive loading (381Lm-2h-1 and 150.2kDa). Therefore, the addition of TPPOQP-Br significantly enhances the water permeability while maintaining the excellent rejection properties in the resultant UF membranes. This work extends the choice of the additives in the UF membrane fabrication, and further proves that the addition of hydrophobic and charged polymer with slow hydration property is an effective strategy for improving flux and anti-biofouling properties of UF membranes.
Original languageEnglish
Pages (from-to)67 - 75
Number of pages9
JournalJournal of Membrane Science
Volume482
DOIs
Publication statusPublished - 5 May 2015

Cite this

@article{1f1ff264a639417ca13c42f40f8b495f,
title = "Composite ultrafiltration membranes from polymer and its quaternary phosphonium-functionalized derivative with enhanced water flux",
abstract = "Novel ultrafiltration (UF) membranes were prepared by blending brominated poly(phenylene oxide) (BPPO) and its quaternary phosphonium derivative (TPPOQP-Br) as additive using a phase inversion method. The chemical structure and microstructure of the membranes were characterized by Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-IR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The XPS results indicated that the BPPO/TPPOQP-Br composite membranes exhibited an increase in the concentration of TPPOQP-Br from the top surface to the bottom surface. In contrast, the composite membranes prepared from BPPO and its quaternary ammonium derivative (TPPOQA-Br) showed an opposite concentration gradient of TPPOQA-Br. This was attributed to the difference in wettability and hydration rate between TPPOQP-Br and TPPOQA-Br, leading to different membrane microstructure and chemical composition distributions. BPPO membrane showed a water flux of 215Lm-2h-1 at 100kPa and its molecular weight cut-off of PEG is 93.8kDa; the corresponding values of the optimal BPPO/TPPOQP-Br membrane are 873Lm-2h-1 and 111.3kDa, both of which are better than those of BPPO/TPPOQA-Br with the similar additive loading (381Lm-2h-1 and 150.2kDa). Therefore, the addition of TPPOQP-Br significantly enhances the water permeability while maintaining the excellent rejection properties in the resultant UF membranes. This work extends the choice of the additives in the UF membrane fabrication, and further proves that the addition of hydrophobic and charged polymer with slow hydration property is an effective strategy for improving flux and anti-biofouling properties of UF membranes.",
author = "Xiaocheng Lin and Kun Wang and Yi Feng and Liu, {Jefferson Zhe} and Xiya Fang and Tongwen Xu and Huanting Wang",
year = "2015",
month = "5",
day = "5",
doi = "10.1016/j.memsci.2015.02.017",
language = "English",
volume = "482",
pages = "67 -- 75",
journal = "Journal of Membrane Science",
issn = "0376-7388",
publisher = "Elsevier",

}

Composite ultrafiltration membranes from polymer and its quaternary phosphonium-functionalized derivative with enhanced water flux. / Lin, Xiaocheng; Wang, Kun; Feng, Yi; Liu, Jefferson Zhe; Fang, Xiya; Xu, Tongwen; Wang, Huanting.

In: Journal of Membrane Science, Vol. 482, 05.05.2015, p. 67 - 75.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Composite ultrafiltration membranes from polymer and its quaternary phosphonium-functionalized derivative with enhanced water flux

AU - Lin, Xiaocheng

AU - Wang, Kun

AU - Feng, Yi

AU - Liu, Jefferson Zhe

AU - Fang, Xiya

AU - Xu, Tongwen

AU - Wang, Huanting

PY - 2015/5/5

Y1 - 2015/5/5

N2 - Novel ultrafiltration (UF) membranes were prepared by blending brominated poly(phenylene oxide) (BPPO) and its quaternary phosphonium derivative (TPPOQP-Br) as additive using a phase inversion method. The chemical structure and microstructure of the membranes were characterized by Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-IR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The XPS results indicated that the BPPO/TPPOQP-Br composite membranes exhibited an increase in the concentration of TPPOQP-Br from the top surface to the bottom surface. In contrast, the composite membranes prepared from BPPO and its quaternary ammonium derivative (TPPOQA-Br) showed an opposite concentration gradient of TPPOQA-Br. This was attributed to the difference in wettability and hydration rate between TPPOQP-Br and TPPOQA-Br, leading to different membrane microstructure and chemical composition distributions. BPPO membrane showed a water flux of 215Lm-2h-1 at 100kPa and its molecular weight cut-off of PEG is 93.8kDa; the corresponding values of the optimal BPPO/TPPOQP-Br membrane are 873Lm-2h-1 and 111.3kDa, both of which are better than those of BPPO/TPPOQA-Br with the similar additive loading (381Lm-2h-1 and 150.2kDa). Therefore, the addition of TPPOQP-Br significantly enhances the water permeability while maintaining the excellent rejection properties in the resultant UF membranes. This work extends the choice of the additives in the UF membrane fabrication, and further proves that the addition of hydrophobic and charged polymer with slow hydration property is an effective strategy for improving flux and anti-biofouling properties of UF membranes.

AB - Novel ultrafiltration (UF) membranes were prepared by blending brominated poly(phenylene oxide) (BPPO) and its quaternary phosphonium derivative (TPPOQP-Br) as additive using a phase inversion method. The chemical structure and microstructure of the membranes were characterized by Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-IR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The XPS results indicated that the BPPO/TPPOQP-Br composite membranes exhibited an increase in the concentration of TPPOQP-Br from the top surface to the bottom surface. In contrast, the composite membranes prepared from BPPO and its quaternary ammonium derivative (TPPOQA-Br) showed an opposite concentration gradient of TPPOQA-Br. This was attributed to the difference in wettability and hydration rate between TPPOQP-Br and TPPOQA-Br, leading to different membrane microstructure and chemical composition distributions. BPPO membrane showed a water flux of 215Lm-2h-1 at 100kPa and its molecular weight cut-off of PEG is 93.8kDa; the corresponding values of the optimal BPPO/TPPOQP-Br membrane are 873Lm-2h-1 and 111.3kDa, both of which are better than those of BPPO/TPPOQA-Br with the similar additive loading (381Lm-2h-1 and 150.2kDa). Therefore, the addition of TPPOQP-Br significantly enhances the water permeability while maintaining the excellent rejection properties in the resultant UF membranes. This work extends the choice of the additives in the UF membrane fabrication, and further proves that the addition of hydrophobic and charged polymer with slow hydration property is an effective strategy for improving flux and anti-biofouling properties of UF membranes.

UR - http://goo.gl/2lZomD

U2 - 10.1016/j.memsci.2015.02.017

DO - 10.1016/j.memsci.2015.02.017

M3 - Article

VL - 482

SP - 67

EP - 75

JO - Journal of Membrane Science

JF - Journal of Membrane Science

SN - 0376-7388

ER -