Integral PVA-PES Composite Membranes by Surface Segregation Method for Pervaporation Dehydration of Ethanol

吴洪; 李宪实; 聂明成; 李犇; 姜忠义

doi:10.1016/S1004-9541(11)60065-7

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Integral PVA-PES Composite Membranes by Surface Segregation Method for Pervaporation Dehydration of Ethanol

Updated：2026-01-06

- Integral PVA-PES Composite Membranes by Surface Segregation Method for Pervaporation Dehydration of Ethanol
- Integral PVA-PES Composite Membranes by Surface Segregation Method for Pervaporation Dehydration of Ethanol
- 中国化学工程学报（英文版） 2011年19卷第5期页码：855-862
- Affiliations：
  
  1. Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
  2. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University,Tianjin,China,300072
- Author bio：
- Funds：
  
  Supported by the State Key Development Program for Basic Research of China (2009CB623404);Program for New Century Excellent Talents in University,the Programme of Introducing Talents of Discipline to Universities (B06006);State KeyLaboratory for Modification of Chemical Fibers and Polymer Materials (Dong Hua University)
- DOI：10.1016/S1004-9541(11)60065-7
  中图分类号：
- 纸质出版：2011
- Accepted：
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吴洪, 李宪实, 聂明成, 等. Integral PVA-PES Composite Membranes by Surface Segregation Method for Pervaporation Dehydration of Ethanol[J]. 中国化学工程学报（英文版）, 2011,19(5):855-862.

WU Hong, LI Xianshi, NIE Mingcheng, LI Ben, JIANG Zhongyi. Integral PVA-PES Composite Membranes by Surface Segregation Method for Pervaporation Dehydration of Ethanol[J]. , 2011, 19(5): 855-862.
吴洪, 李宪实, 聂明成, 等. Integral PVA-PES Composite Membranes by Surface Segregation Method for Pervaporation Dehydration of Ethanol[J]. 中国化学工程学报（英文版）, 2011,19(5):855-862. DOI： 10.1016/S1004-9541(11)60065-7.

WU Hong, LI Xianshi, NIE Mingcheng, LI Ben, JIANG Zhongyi. Integral PVA-PES Composite Membranes by Surface Segregation Method for Pervaporation Dehydration of Ethanol[J]. , 2011, 19(5): 855-862. DOI： 10.1016/S1004-9541(11)60065-7.

摘要

Abstract

A facile surface segregation method was utilized to fabricate poly(vinyl alcohol)-polyethersulfone (PVA-PES) composite membranes. PVA and PES were first dissolved in dimethyl sulfoxide (DMSO)

then casted on a glass plate and immersed in a coagulation bath. During the phase inversion process in coagulation bath

PVA spontaneously segregated to the polymer solution/coagulation bath interface. The enriched PVA on the surface was further crosslinked by glutaraldehyde. Scanning electron microscopy (SEM)

X-ray photoelectron spectroscopy (XPS) and energy dispersive spectrometer (EDS) confirmed the integral and asymmetric membrane structure with a dense PVA-enriched surface and a porous PES-enriched support

as well as the surface enrichment of PVA. The coverage fraction of the membrane surface by PVA reached up to 86.8% when the PVA content in the membrane recipe was 16.7% (by mass). The water contact angle decreased with the increase of PVA content. The effect of coagulation bath type on membrane structure was analyzed. The membrane pervaporation performance was evaluated by varying the PVA content

the annealing temperature

feed concentration and operation temperature. The membrane exhibited a fairly good ethanol dehydration capacity and long-term operational stability.

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