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Solvent-Resistant UV-Cured Polysulfone Support Membranes Using a Green Solvent.

Angela Dedvukaj1, Peter Van den Mooter1, Ivo F J Vankelecom1

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Membranes
|January 21, 2022
PubMed
Summary

Novel solvent-resistant UV-cured supports were developed using polysulfone and poly-acrylate with the eco-friendly solvent Tamisolve® NxG. These versatile supports enhance chemical resistance for diverse membrane synthesis applications.

Keywords:
Tamisolve® NxGUV-curinggreen solventphase inversionpolysulfonesolvent-resistant support

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Area of Science:

  • Polymer chemistry
  • Materials science
  • Membrane technology

Background:

  • Traditional membrane supports often rely on reprotoxic solvents like DMF and NMP.
  • Developing robust, chemically resistant supports is crucial for advanced membrane applications.
  • There is a need for sustainable and biodegradable solvent alternatives in polymer processing.

Purpose of the Study:

  • To synthesize novel solvent-resistant UV-cured support membranes using a sustainable solvent.
  • To investigate the properties and performance of these supports for broad membrane synthesis.
  • To demonstrate the potential of these supports in creating high-performance thin film composite (TFC) membranes.

Main Methods:

  • Synthesis of semi-interpenetrating networks of polysulfone (PSf) and poly-acrylate via UV-curing.
  • Utilizing Tamisolve® NxG, a non-reprotoxic and biodegradable solvent.
  • Membrane fabrication through UV-curing followed by non-solvent-induced phase inversion.
  • Characterization of support properties including separation performance, hydrophobicity, porosity, and chemical resistance.
  • Preparation and testing of TFC membranes with polyamide selective layers.

Main Results:

  • Successfully synthesized solvent-resistant UV-cured supports with improved chemical resistance in various organic solvents (ethyl acetate, NMP, THF, toluene).
  • Demonstrated tunable porosity for creating supports suitable for diverse membrane applications.
  • Developed TFC membranes exhibiting high Rose Bengal rejection (up to 98%) and good water permeance (up to 1.5 L m⁻² h⁻¹ bar⁻¹).

Conclusions:

  • UV-cured semi-interpenetrating network supports offer a versatile and solvent-resistant platform for membrane fabrication.
  • Tamisolve® NxG provides an eco-friendly alternative solvent for synthesizing high-performance polymer membranes.
  • The developed supports show significant promise for advanced separation applications, particularly in TFC membrane technology.