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Asymmetric flat sheet PLA membranes were fabricated via non-solvent induced phase separation (NIPS). The polymer solutions were made by dissolving 16 wt. % of PLA polymer and predetermined TiO2 (0, 1, 2, and 3 wt.%) in dimethylacetamide solvent. The prepared membranes were characterized through several characterizations to examine the effects of varying TiO2 compositions on the membrane properties like membrane porosity, hydrophilicity and functional group. The membrane’s performance was tested in terms of water flux, permeability and methylene blue dye removal ability. The results show that the PLA membrane was successfully synthesized using NIPS method and the varying compositions of TiO2 at 3 wt. % have a remarkable outcome on the porosity and hydrophobicity of the membrane. The water flux and permeability of the membrane showed increasing trend from 0.6795 to 1.2307 L/m2.hr and 0.3397 to 0.6153 L/m2.hr.bar, respectively with increasing compositions of TiO2. Lastly, MB dye removal test was carried out at 1 bar and with composition of 0.01 mg/mL and able to remove up to 96.5%.

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Fabrication of Asymmetric Polylactic Acid Membrane Incorporated with Titanium Dioxide for Methylene Blue Dye Removal

  • 会议论文

  • 发表日期：

    2025年

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  • Amira Mohd Nasib,
  • Gayathri Arumugam,
  • Mohamad Syahmie Mohamad Rasidi,
  • Siti Kartini Enche Ab Rahim

摘要

Asymmetric flat sheet PLA membranes were fabricated via non-solvent induced phase separation (NIPS). The polymer solutions were made by dissolving 16 wt. % of PLA polymer and predetermined TiO2 (0, 1, 2, and 3 wt.%) in dimethylacetamide solvent. The prepared membranes were characterized through several characterizations to examine the effects of varying TiO2 compositions on the membrane properties like membrane porosity, hydrophilicity and functional group. The membrane’s performance was tested in terms of water flux, permeability and methylene blue dye removal ability. The results show that the PLA membrane was successfully synthesized using NIPS method and the varying compositions of TiO2 at 3 wt. % have a remarkable outcome on the porosity and hydrophobicity of the membrane. The water flux and permeability of the membrane showed increasing trend from 0.6795 to 1.2307 L/m2.hr and 0.3397 to 0.6153 L/m2.hr.bar, respectively with increasing compositions of TiO2. Lastly, MB dye removal test was carried out at 1 bar and with composition of 0.01 mg/mL and able to remove up to 96.5%.