Improved filtration performance and antifouling properties of polyethersulfone ultrafiltration membranes by blending with carboxylic acid functionalized polysulfone

Xing Wu, Zongli Xie, Huanting Wang, Chen Zhao, Derrick Ng, Kaisong Zhang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

To improve the filtration performance and antifouling properties of ultrafiltration (UF) membranes, novel polymer blend UF membranes were fabricated in this study. Carboxylic acid functionalized polysulfone (PSFNA) was synthesized by modifying polysulfone (PSF) with 6-hydroxy-2-naphthoic acid (HNA). A series of polymer blend UF membranes were fabricated by adding different amounts of PSFNA into polyethersulfone (PES) to form a homogeneous casting solution. The influences of PSFNA on the morphology, thermal stability, hydrophilicity, filtration performance and antifouling properties of the blend membranes were investigated. The results indicated that by adding PSFNA into PES membranes, the finger-like pores in the membranes became larger, and the porosity and surface hydrophilicity of the membranes were improved. Compared with the pristine PES membrane, PES/PSFNA membranes demonstrated improved filtration performance, resulting in both increased water flux and higher bovine serum albumin (BSA) rejection. At a feed pressure of 0.1 MPa, the PES/PSFNA membrane with 4.0 wt% PSFNA had a pure water flux of 478 L m-2 h-1, which was 1.7 times higher compared with the PES membrane (287 L m-2 h-1). In addition, the antifouling properties of PES membranes were also enhanced with the addition of PSFNA. The PES/PSFNA membranes with 3.0 wt% PSFNA had a total fouling ratio (TFR) of 49.6%, as compared with 62.5% for PES membranes.

Original languageEnglish
Pages (from-to)7774-7784
Number of pages11
JournalRSC Advances
Volume8
Issue number14
DOIs
Publication statusPublished - 1 Jan 2018

Cite this

@article{d5a5251d488146bc914a25356ed12532,
title = "Improved filtration performance and antifouling properties of polyethersulfone ultrafiltration membranes by blending with carboxylic acid functionalized polysulfone",
abstract = "To improve the filtration performance and antifouling properties of ultrafiltration (UF) membranes, novel polymer blend UF membranes were fabricated in this study. Carboxylic acid functionalized polysulfone (PSFNA) was synthesized by modifying polysulfone (PSF) with 6-hydroxy-2-naphthoic acid (HNA). A series of polymer blend UF membranes were fabricated by adding different amounts of PSFNA into polyethersulfone (PES) to form a homogeneous casting solution. The influences of PSFNA on the morphology, thermal stability, hydrophilicity, filtration performance and antifouling properties of the blend membranes were investigated. The results indicated that by adding PSFNA into PES membranes, the finger-like pores in the membranes became larger, and the porosity and surface hydrophilicity of the membranes were improved. Compared with the pristine PES membrane, PES/PSFNA membranes demonstrated improved filtration performance, resulting in both increased water flux and higher bovine serum albumin (BSA) rejection. At a feed pressure of 0.1 MPa, the PES/PSFNA membrane with 4.0 wt{\%} PSFNA had a pure water flux of 478 L m-2 h-1, which was 1.7 times higher compared with the PES membrane (287 L m-2 h-1). In addition, the antifouling properties of PES membranes were also enhanced with the addition of PSFNA. The PES/PSFNA membranes with 3.0 wt{\%} PSFNA had a total fouling ratio (TFR) of 49.6{\%}, as compared with 62.5{\%} for PES membranes.",
author = "Xing Wu and Zongli Xie and Huanting Wang and Chen Zhao and Derrick Ng and Kaisong Zhang",
year = "2018",
month = "1",
day = "1",
doi = "10.1039/c7ra12447c",
language = "English",
volume = "8",
pages = "7774--7784",
journal = "RSC Advances",
issn = "2046-2069",
publisher = "The Royal Society of Chemistry",
number = "14",

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Improved filtration performance and antifouling properties of polyethersulfone ultrafiltration membranes by blending with carboxylic acid functionalized polysulfone. / Wu, Xing; Xie, Zongli; Wang, Huanting; Zhao, Chen; Ng, Derrick; Zhang, Kaisong.

In: RSC Advances, Vol. 8, No. 14, 01.01.2018, p. 7774-7784.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Improved filtration performance and antifouling properties of polyethersulfone ultrafiltration membranes by blending with carboxylic acid functionalized polysulfone

AU - Wu, Xing

AU - Xie, Zongli

AU - Wang, Huanting

AU - Zhao, Chen

AU - Ng, Derrick

AU - Zhang, Kaisong

PY - 2018/1/1

Y1 - 2018/1/1

N2 - To improve the filtration performance and antifouling properties of ultrafiltration (UF) membranes, novel polymer blend UF membranes were fabricated in this study. Carboxylic acid functionalized polysulfone (PSFNA) was synthesized by modifying polysulfone (PSF) with 6-hydroxy-2-naphthoic acid (HNA). A series of polymer blend UF membranes were fabricated by adding different amounts of PSFNA into polyethersulfone (PES) to form a homogeneous casting solution. The influences of PSFNA on the morphology, thermal stability, hydrophilicity, filtration performance and antifouling properties of the blend membranes were investigated. The results indicated that by adding PSFNA into PES membranes, the finger-like pores in the membranes became larger, and the porosity and surface hydrophilicity of the membranes were improved. Compared with the pristine PES membrane, PES/PSFNA membranes demonstrated improved filtration performance, resulting in both increased water flux and higher bovine serum albumin (BSA) rejection. At a feed pressure of 0.1 MPa, the PES/PSFNA membrane with 4.0 wt% PSFNA had a pure water flux of 478 L m-2 h-1, which was 1.7 times higher compared with the PES membrane (287 L m-2 h-1). In addition, the antifouling properties of PES membranes were also enhanced with the addition of PSFNA. The PES/PSFNA membranes with 3.0 wt% PSFNA had a total fouling ratio (TFR) of 49.6%, as compared with 62.5% for PES membranes.

AB - To improve the filtration performance and antifouling properties of ultrafiltration (UF) membranes, novel polymer blend UF membranes were fabricated in this study. Carboxylic acid functionalized polysulfone (PSFNA) was synthesized by modifying polysulfone (PSF) with 6-hydroxy-2-naphthoic acid (HNA). A series of polymer blend UF membranes were fabricated by adding different amounts of PSFNA into polyethersulfone (PES) to form a homogeneous casting solution. The influences of PSFNA on the morphology, thermal stability, hydrophilicity, filtration performance and antifouling properties of the blend membranes were investigated. The results indicated that by adding PSFNA into PES membranes, the finger-like pores in the membranes became larger, and the porosity and surface hydrophilicity of the membranes were improved. Compared with the pristine PES membrane, PES/PSFNA membranes demonstrated improved filtration performance, resulting in both increased water flux and higher bovine serum albumin (BSA) rejection. At a feed pressure of 0.1 MPa, the PES/PSFNA membrane with 4.0 wt% PSFNA had a pure water flux of 478 L m-2 h-1, which was 1.7 times higher compared with the PES membrane (287 L m-2 h-1). In addition, the antifouling properties of PES membranes were also enhanced with the addition of PSFNA. The PES/PSFNA membranes with 3.0 wt% PSFNA had a total fouling ratio (TFR) of 49.6%, as compared with 62.5% for PES membranes.

UR - http://www.scopus.com/inward/record.url?scp=85042423307&partnerID=8YFLogxK

U2 - 10.1039/c7ra12447c

DO - 10.1039/c7ra12447c

M3 - Article

VL - 8

SP - 7774

EP - 7784

JO - RSC Advances

JF - RSC Advances

SN - 2046-2069

IS - 14

ER -