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Solution blow spinning-polyacrylonitrile-assisted cellulose acetate nanofiber membrane
Glebert C Dadol1, Kramer Joseph A Lim1, Luis K Cabatingan1
1Department of Chemical Engineering, University of San Carlos - Talamban Campus, Nasipit, Talamban, Cebu City, 6000, The Philippines.
Nanotechnology
|May 7, 2020
Summary
Researchers developed a scalable method for creating cellulose-based nanofiber membranes using solution blow spinning. This technique utilizes cellulose acetate and polyacrylonitrile to produce effective filters for air and water purification.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Cellulose-based nanofiber membrane fabrication faces challenges, particularly with sustainable material sourcing.
- Existing methods often lack scalability and efficiency for industrial applications.
Purpose of the Study:
- To develop an easy, scalable method for fabricating cellulose-based nanofiber membranes.
- To utilize sustainable cellulose sources combined with a precursor polymer for membrane production.
Main Methods:
- Employed solution blow spinning (SBS) with cellulose acetate (CA) and polyacrylonitrile (PAN) as precursor polymers.
- Optimized CA concentration (50%-65% v/v CA/PAN) and high air pressure (≥3 bars) for nanofiber formation.
- Characterized the resulting CA/PAN composite nanofibers using SEM, FTIR, TGA, and DSC.
Main Results:
- Successfully fabricated cellulose-based nanofiber membranes via a scalable SBS method.
- Demonstrated concentration-dependent formation of CA/PAN nanofibers, requiring specific ratios and high pressure.
- Confirmed the successful integration and structure of CA within the PAN nanofiber matrix.
Conclusions:
- The developed SBS method offers a scalable and efficient route for cellulose-based nanofiber membrane production.
- These composite nanofiber membranes show significant potential for air and water filtration applications.
- The membranes are also promising for biorefinery processes, highlighting their versatility.
