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Updated: Jan 30, 2026

Rapid Assessment of Membrane Protein Quality by Fluorescent Size Exclusion Chromatography
Published on: January 6, 2023
Rapid Size-Based Protein Discrimination inside Hybrid Isoporous Membranes
Researchers developed advanced hybrid isoporous membranes using block copolymers and graphene oxide. These novel membranes exhibit superior antifouling properties and enhanced separation of blood proteins, paving the way for efficient bioseparation applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Isoporous membranes from block copolymers (BCPs) are crucial for macromolecular separation.
- Membrane fouling remains a significant challenge, reducing performance.
- Enhancing membrane hydrophilicity is key to mitigating fouling.
Purpose of the Study:
- To create advanced hybrid isoporous membranes with improved antifouling properties.
- To investigate the synergistic effects of BCPs and functionalized graphene oxide.
- To evaluate the performance in challenging bioseparation applications.
Main Methods:
- Incorporation of hydrophilic polymer-grafted graphene oxide nanosheets into BCP isoporous membranes.
- Characterization of membrane morphology, hydrophilicity, and responsive behaviors (pH, alcohol).
- Performance evaluation in ultrafiltration of blood proteins (bovine serum albumin, immunoglobulin).
Main Results:
- Hybrid membranes exhibited pH-responsive and alcohol-gating behaviors.
- Demonstrated improved bactericidal capabilities.
- Achieved a record separation factor of 33 for blood proteins.
- Showcased a 60% flux enhancement compared to pristine BCP membranes.
Conclusions:
- The developed fouling-resistant hybrid isoporous membranes offer superior performance in bioseparation.
- Synergistic integration of BCPs and functionalized graphene oxide enhances membrane properties.
- These membranes hold potential for replacing existing ones in energy-efficient bioseparation.
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