Fabrication of PFDA-modified PEBA-2533 hydrophobic membranes and their phenol solution separation property

LIN Fei; LI Yuanjiang; GAO Feng; SHI Yu; ANOZIE Chukwudi Everist; WANG Xiaodong; HUANG Wei

doi:10.11949/0438-11157:20260012

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Fabrication of PFDA-modified PEBA-2533 hydrophobic membranes and their phenol solution separation property

更新时间：2026-05-25

- Fabrication of PFDA-modified PEBA-2533 hydrophobic membranes and their phenol solution separation property
- CIESC Journal (2026)
- 作者机构：
  
  1.太原理工大学化学与化工学院，山西太原 030024
  2.山西正阳污水净化有限公司，山西晋中 030600
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-11157:20260012
  CLC： TQ028.8;X703
- Received：05 January 2026，
  
  Revised：2026-05-24，
  
  Accepted：25 May 2026，
- 稿件说明：
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LIN Fei, LI Yuanjiang, GAO Feng, et al. Fabrication of PFDA-modified PEBA-2533 hydrophobic membranes and their phenol solution separation property[J/OL]. CIESC Journal, 2026.
DOI：

LIN Fei, LI Yuanjiang, GAO Feng, et al. Fabrication of PFDA-modified PEBA-2533 hydrophobic membranes and their phenol solution separation property[J/OL]. CIESC Journal, 2026. DOI： 10.11949/0438-11157:20260012.

摘要

对苯酚溶液具有良好分离性能的聚醚嵌段共聚酰胺膜（PE

BA-2533）中存在大量亲水官能团，这不利于苯酚的选择透过。为了提高其疏水性，采用共混法将富含-CF

、-CF

-和-COOCH=CH

官能团的全氟癸基丙烯酸酯（PFDA）引入PEBA-2533中，含氟官能团可提高膜的疏水性，酯基能和苯酚的酚羟基产生氢键，提高膜对苯酚的亲和力。结果表明，当PFDA掺杂量不大于15 wt.%时，其在PEBA-2533中均匀分布，超过15 wt.%后则在局部富集。PFDA掺杂量为15 wt.%的共混膜具有最强的疏水性和苯酚亲和力，其水接触角和苯酚溶胀度相较于纯PEBA-2533膜分别提升了16.55%和30.43%。在该膜上，80 ℃时，对于浓度为50 – 8000 mg/kg的苯酚溶液，分离因子为161.29 – 61.11，总渗透通量为172 – 800 g/m

·h，优于相关的文献报道。本工作为PEBA-2533膜的疏水亲酚改性提供了一种有效方法。

Abstract

The poly(ether-block-amide) membrane (PEBA-2533) with excellent separation performance for phenol solution contains a large number of hydrophilic functional groups

which is not conducive to the selective permeation of phenol. To enhance its hydrophobicity

perfluorodecyl acrylate (PFDA) rich in -CF₃

-CF₂- and -COOCH=CH₂ functional groups was introduced into PEBA-2533 by blending. The fluorine-containing functional groups in PFDA can improve the hydrophobicity of the membrane

and the ester groups can enhance the membrane's affinity to phenol by forming hydrogen bonds with the phenolic hydroxyl groups. The results indicated that PFDA dispersed uniformly in PEBA-2533 matrix with the doping amount not more than 15 wt.%

while it became locally enriched at loadings exceeding 15 wt.%. The blend membrane containing 15 wt.% PFDA demonstrated the highest hydrophobicity and affinity to phenol

with the water contact angle and Phenol swelling degree increasing by 16.55% and 30.43% respectively compared to pristine PEBA-2533 membrane. On the membrane

the separation factor for phenol solutions with concentrations of 50 – 8000 mg/kg was 161.29 – 61.11 at 80 ℃

with the total permeation flux of 172 – 800 g/m

·h

outperforming the related literature reports. This work provides an effective strategy for the hydrophobic and phenol-philic modification of PEBA-2533 membranes.

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references

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