Preparation and Surface Modification of Polyether Sulfone Porous Membranes Based on the Reverse Thermally Induced Phase Separation Method

HUO Jia-dong; ZHONG Wen-qiang; XU Rui-jie; LEI Cai-hong

doi:10.14028/j.cnki.1003-3726.2025.24.395

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Preparation and Surface Modification of Polyether Sulfone Porous Membranes Based on the Reverse Thermally Induced Phase Separation Method

更新时间：2025-06-25

- Preparation and Surface Modification of Polyether Sulfone Porous Membranes Based on the Reverse Thermally Induced Phase Separation Method
- Polymer Bulletin Vol. 38, Issue 7, Pages: 1133-1139(2025)
- 作者机构：
  
  广东工业大学材料与能源学院，广州 510006
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2025.24.395
  CLC：
- Received：30 December 2024，
  
  Accepted：07 March 2025，
  
  Published Online：16 May 2025，
  
  Published：20 July 2025
- 稿件说明：
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霍家东, 钟文强, 徐睿杰, 雷彩红. 基于逆热致相分离法聚醚砜多孔膜的制备及表面改性. 高分子通报, 2025, 38(7), 1133–1139.

Huo, J. D.; Zhong, W. Q.; Xu, R. J.; Lei, C. H. Preparation and surface modification of polyether sulfone porous membranes based on the reverse thermally induced phase separation method. Polym. Bull. (in Chinese), 2025, 38(7), 1133–1139.
霍家东, 钟文强, 徐睿杰, 雷彩红. 基于逆热致相分离法聚醚砜多孔膜的制备及表面改性. 高分子通报, 2025, 38(7), 1133–1139. DOI： 10.14028/j.cnki.1003-3726.2025.24.395.

Huo, J. D.; Zhong, W. Q.; Xu, R. J.; Lei, C. H. Preparation and surface modification of polyether sulfone porous membranes based on the reverse thermally induced phase separation method. Polym. Bull. (in Chinese), 2025, 38(7), 1133–1139. DOI： 10.14028/j.cnki.1003-3726.2025.24.395.

摘要

采用逆热致相分离(RTIPS)法制备了聚醚砜(PES)多孔膜，探究了非溶剂聚乙二醇(PEG200)添加量以及表面涂覆聚乙烯醇-谷氨酸(PVA-GLU)对膜结构和性能的影响。结果表明，随着PEG200添加量增加，铸膜液的浊点和临界共溶温度降低；在水浴温度80 ℃下制备的多孔膜手指状孔消失，呈现全海绵状孔结构，但表面孔径较大；进一步表面PVA-GLU涂覆交联后，表面孔径由(5.2±0.3) μm减小到(0.66±0.05) μm，同时水渗透性和长期稳定性提高，膜的断裂伸长率由5.8%提高到14.0%，断裂强度由2.4 MPa提高到3.2 MPa。改性后膜的亲水性得到改善，力学性能增强。

Abstract

Polyethersulfone (PES) porous membranes were prepared by the reverse thermally induced phase separation (RTIPS) method. The effects of the addition amount of the nonsolvent polyethylene glycol (PEG200) and surface modification with polyvinyl alcohol-glutamic acid (PVA-GLU) coating on the structure and properties of the membranes were investigated. The results show that with the increase in the addition amount of the nonsolvent PEG200

the cloud point and the critical solubility temperature of the casting solution decreased. The finger shaped pores in the porous membrane prepared at a water bath temperature of 80 ℃ disappeared

presenting a fully sponge like pore structure

but with a larger surface pore size. After the surface was coated and cross-linked with PVA-GLU

the surface pore size decreased from (5.2±0.3) μm to (0.66±0.05) μm

while water permeability and long-term stability improved. The elongation at break of the membrane was increased from 5.8% to 14.0%

and the breaking strength was increased from 2.4 MPa to 3.2 MPa. The hydrophilicity of the modified membrane is improved

and the mechanical properties are enhanced.

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references

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