Endowing the Antifouling and Self-cleaning Properties of Poly(ether sulfone) Oil/Water Separation Membrane by Blending with Amphiphilic Block Copolymer Additive

Jun Yin; Jing-pin Song; Xin-an Cai; Hui-yan Gao

doi:10.11777/j.issn1000-3304.2021.21081

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Endowing the Antifouling and Self-cleaning Properties of Poly(ether sulfone) Oil/Water Separation Membrane by Blending with Amphiphilic Block Copolymer Additive

Research Article | 更新时间：2023-12-20

- Endowing the Antifouling and Self-cleaning Properties of Poly(ether sulfone) Oil/Water Separation Membrane by Blending with Amphiphilic Block Copolymer Additive
- ACTA POLYMERICA SINICA Vol. 52, Issue 10, Pages: 1368-1378(2021)
- 作者机构：
  
  景德镇学院生物与环境工程学院景德镇 333000
- 作者简介：
  
  Jun Yin, E-mail: yinminghan@163.com
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2021.21081
  CLC：
- Published：20 October 2021，
  
  Published Online：09 August 2021，
  
  Received：13 March 2021，
  
  Revised：18 April 2021，
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殷俊,宋景平,蔡新安等.掺杂两亲性嵌段共聚物构筑抗污染自清洁聚醚砜膜[J].高分子学报,2021,52(10):1368-1378.

Yin Jun,Song Jing-pin,Cai Xin-an,et al.Endowing the Antifouling and Self-cleaning Properties of Poly(ether sulfone) Oil/Water Separation Membrane by Blending with Amphiphilic Block Copolymer Additive[J].ACTA POLYMERICA SINICA,2021,52(10):1368-1378.
殷俊,宋景平,蔡新安等.掺杂两亲性嵌段共聚物构筑抗污染自清洁聚醚砜膜[J].高分子学报,2021,52(10):1368-1378. DOI： 10.11777/j.issn1000-3304.2021.21081.

Yin Jun,Song Jing-pin,Cai Xin-an,et al.Endowing the Antifouling and Self-cleaning Properties of Poly(ether sulfone) Oil/Water Separation Membrane by Blending with Amphiphilic Block Copolymer Additive[J].ACTA POLYMERICA SINICA,2021,52(10):1368-1378. DOI： 10.11777/j.issn1000-3304.2021.21081.

摘要

通过可逆加成-断裂链转移聚合(RAFT)制备嵌段共聚物聚乙二醇单甲醚-

-聚甲基丙烯酸六氟丁酯-

-聚甲基丙烯酸缩水甘油酯(mPEG-

-PHFBM-

-PGMA). 将其作为改性剂，通过非溶剂诱导相分离法制备聚醚砜(PES)/mPEG-

-PHFBM-

-PGMA复合膜. 在成膜过程中亲水性的聚乙二醇链段发生自由表面偏析的同时，带动低表面能的PHFBM链段发生强制表面偏析，进而构建抗污染、自清洁的膜表面. PES/PFG5复合膜的纯水通量和油水通量分别为290.25和252.89 L·m

-2

·h

-1

，而未改性的PES膜分别只有64.10和11.09 L·m

-2

·h

-1

. 相对于PES空白膜，通量恢复率从45.75%提高至90.15%，油水通量衰减率由82.70%降至12.87%，抗油污染能力大幅度增强. 由于mPEG-

-PHFBM-

-PGMA中的PGMA链段与PES链段之间的物理缠结以及疏水作用力，其在PES膜中表现出良好的稳定性，表明该膜材料在油水分离中具有良好的应用前景.

Abstract

Oil/water separation is a worldwide challenge because large amounts of oily wastewater are produced in our daily life and many industrial processes. There is a growing tendency to employ ultrafiltration membrane for treating oily wastewater due to its low energy consumption

high operation efficiency and environmentally friendly characteristic.Recently

amphiphilic copolymers were designed as additives to fabricate composite membranes through physical blending modification

which has quickly become a research hotspot due to its simple operation. In this work

a novel amphiphilic block copolymer of poly(ethylene glycol methyl ether) block poly(hexafluorobutyl methacrylate) block poly(glycidyl methacrylate) (mPEG-

-PHFBM-

-PGMA) was beforehand synthesized

via

reversible addition-fragmentation chain transfer polymerization (RAFT). Then

the PES/mPEG-

-PHFBM-

-PGMA composite membrane was prepared by the NIPS method. In the membrane formation process

the hydrophobic PGMA segments in mPEG-

-PHFBM-

-PGMA act as an anchor

which amalgamated with hydrophobic PES molecular. At the same time

the hydrophilic mPEG segments migrated spontaneously to the membrane surface

via

a "free surface segregation" approach

dragging the low surface energy PHFBM segments onto membrane surfaces. In this way

an antifouling and self-cleaning advanced membrane surface was constructed. The pure water flux and oil flux of the PES/PFG5 composite membrane are around 290.25 and 252.89 L·m

-2

·h

-1

respectively. The corresponding values of the PES blank membrane are only 64.10 and 11.09 L·m

-2

·h

-1

respectively. Compared with the unmodified PES membrane

the flux recovery ratio increases from 45.75% to 90.15%

while the permeation flux-decline value decreases from 82.70% to 12.87%

suggesting the excellent anti-fouling and self-cleaning property of the modified PES/PFG5 composite membrane. Furthermore

the mPEG-

-PHFBM-

-PGMA copolymer exhibits good stability due to the physical intertwisting and hydrophobic interaction between the PGMA and PES

suggesting the good application prospect of the membrane in oil/water separation.

关键词

聚醚砜复合膜油水分离自清洁两亲性嵌段聚合物甲基丙烯酸六氟丁酯

Keywords

PES composite membraneOil/water separationSelf-cleaningAmphiphilic block polymerHexafluorobutyl methacrylate

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MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University

Center for Degradable and Flame-Retardant Polymeric Materials, College of Chemistry, Sichuan University

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