Novel nanofiltration membranes with tunable permselectivity by polymer mediated phase separation in polyamide selective layer

Zhuan Yi; Fa-dong Wu; Yong Zhou; Cong-jie Gao

doi:10.1016/j.cjche.2016.04.019

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Novel nanofiltration membranes with tunable permselectivity by polymer mediated phase separation in polyamide selective layer

第25届中国过程控制会议专栏 | Updated：2026-01-06

- Novel nanofiltration membranes with tunable permselectivity by polymer mediated phase separation in polyamide selective layer
- Novel nanofiltration membranes with tunable permselectivity by polymer mediated phase separation in polyamide selective layer
- 中国化学工程学报（英文版） 2016年24卷第11期页码：1533-1540
- Affiliations：
  
  2 Water Treatment Technology Development Center,Hangzhou,China,310012
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.04.019
  中图分类号：
- 纸质出版：2016
- Accepted：
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Zhuan Yi, Fa-dong Wu, Yong Zhou, 等. Novel nanofiltration membranes with tunable permselectivity by polymer mediated phase separation in polyamide selective layer[J]. 中国化学工程学报（英文版）, 2016,24(11):1533-1540.

Zhuan Yi, Fa-dong Wu, Yong Zhou, Cong-jie Gao. Novel nanofiltration membranes with tunable permselectivity by polymer mediated phase separation in polyamide selective layer[J]. Chin.J.Chem.Eng., 2016, 24(11): 1533-1540.
Zhuan Yi, Fa-dong Wu, Yong Zhou, 等. Novel nanofiltration membranes with tunable permselectivity by polymer mediated phase separation in polyamide selective layer[J]. 中国化学工程学报（英文版）, 2016,24(11):1533-1540. DOI： 10.1016/j.cjche.2016.04.019.

Zhuan Yi, Fa-dong Wu, Yong Zhou, Cong-jie Gao. Novel nanofiltration membranes with tunable permselectivity by polymer mediated phase separation in polyamide selective layer[J]. Chin.J.Chem.Eng., 2016, 24(11): 1533-1540. DOI： 10.1016/j.cjche.2016.04.019.

摘要

Abstract

Microstructure in selective layer has played a decisive role in permselectivity of nanofiltration (NF) membranes

and nanomaterials were well-known additives that had been applied to mediate the microstructure and permeability of polyamide NF membranes. However

nanoadditives generally displayed a poor dispersion in membranes or in fabrication process. To solve this problem

we showed an interesting concept that novel NF membranes with hybrid selective layer consisting of flexible polyisobutylene (PIB) and rigid polyamide could be fabricated fromwell-defined interfacial polymerization. The hydrophobic polymer mediated phase separation andmicrodomains formation in polyamide layerwere found. The immiscibility between the rigid polyamide and flexible PIB as well as the resultant interface effect was interpreted as the reason for the polymer enhanced permselectivity

which was similar with the well-known thin film nanocomposite (TFN) membranes that nanoparticles incorporated contributed significantly to membrane permeability and rejection performance. Our results have demonstrated that novel NF membranes with enhanced performance can be prepared fromimmiscible polymers

which is a new area that has not been extensively studied before.

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