Antifouling binary liquid-infused membranes for biological sample pretreatment

Area of Science:

• Membrane science
• Biomedical engineering
• Analytical chemistry

Background:

• Blood sample pretreatment is essential for accurate analysis.
• Existing methods face challenges with membrane fouling and low separation efficiency.
• Hydrophobic membranes offer potential for improved biological sample handling.

Purpose of the Study:

• To investigate the efficacy of mixed solvent-infused hydrophobic membranes for blood analyte separation.
• To determine the role of low polar solvents in enhancing membrane performance and antifouling properties.
• To optimize membrane-based pretreatment for biological samples.

Main Methods:

• Fabrication of hydrophobic membranes.
• Infusion of membranes with specific solvents and mixed solvents (low polar and specific).
• Application of voltage for analyte separation from blood samples.
• Evaluation of separation efficiency and antifouling properties.

Main Results:

• Membranes infused with mixed solvents demonstrated high analyte separation efficiency from blood under voltage.
• Membranes with only a specific solvent showed significantly lower separation efficiencies.
• The inclusion of a low polar solvent was critical for achieving antifouling capabilities.
• Mixed solvent infusion improved the overall performance for biological sample pretreatment.

Conclusions:

• Mixed solvent infusion, particularly with a low polar solvent, significantly enhances the performance of hydrophobic membranes for blood analyte separation.
• Low polar solvents are key to imparting antifouling properties, making these membranes suitable for biological sample pretreatment.
• Voltage-assisted separation using these enhanced membranes represents a promising approach for efficient and clean biological sample processing.