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Related Experiment Video

Updated: May 12, 2026

Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes
09:09

Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes

Published on: December 15, 2015

Composite polyelectrolyte multilayer membranes for oligosaccharides nanofiltration separation.

Jiafu Shi1, Wenyan Zhang, Yanlei Su

  • 1Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.

Carbohydrate Polymers
|April 3, 2013
PubMed
Summary

Composite polyelectrolyte multilayer (C-PEM) membranes were developed for oligosaccharide nanofiltration. These membranes show high selectivity and flux, offering a promising solution for separating oligosaccharide mixtures.

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Separation Science

Background:

  • Developing efficient membranes for oligosaccharide separation is crucial for various industries.
  • Traditional methods often involve multiple complex steps.
  • Nanofiltration (NF) offers a potential one-step separation solution.

Purpose of the Study:

  • To fabricate and evaluate composite polyelectrolyte multilayer (C-PEM) membranes for oligosaccharide nanofiltration.
  • To investigate the performance of C-PEM membranes compared to single-layer membranes.
  • To assess the potential for one-step separation of oligosaccharide mixtures.

Main Methods:

  • Fabrication of C-PEM membranes using layer-by-layer (LbL) assembly on hydrolyzed polyacrylonitrile (PAN) ultrafiltration supports.

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Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
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Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification

Published on: April 7, 2017

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Last Updated: May 12, 2026

Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes
09:09

Layer-by-layer Synthesis and Transfer of Freestanding Conjugated Microporous Polymer Nanomembranes

Published on: December 15, 2015

Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
07:32

Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification

Published on: April 7, 2017

  • Deposition of (chitosan/poly(styrene sulfonate) (PSS))3 as the middle layer (ML) and (poly(allylamine hydrochloride) (PAH)/PSS)2 as the top layer (TL).
  • Testing membrane performance for oligosaccharide nanofiltration, including flux, rejection rates, and selectivity.

    • Main Results:

    • C-PEM membranes achieved a permeation flux of 3.7±0.3 L m⁻² h⁻¹.
    • 100% rejection of oligosaccharides and 63.0±0.5% rejection of glucose were observed.
    • A high maltose/glucose selectivity of 46 was obtained, outperforming single-paired PEM membranes.

    Conclusions:

    • The developed C-PEM membranes demonstrate superior performance for oligosaccharide nanofiltration compared to conventional membranes.
    • The synergistic effect between the top and middle layers enhances separation efficiency.
    • C-PEM membranes show significant promise for efficient, one-step separation of oligosaccharide mixtures.