Effect of PVP Concentration on PVDF-TiO2-PVP Mixed Matrix-Membrane Properties and Performance

Rianyza Gayatri, Erna Yuliwati, Juhana Jaafar, Muzafar Zulkifli, Wirach Taweepreda, Ahmad Naim Ahmad Yahaya

Abstract


PVDF-TiO2-PVP flat sheet mixed matrix membranes were prepared using non-solvent phase inversion method. This research examined how the PVP concentration (1-5 %wt) as a pore-generating agent affects membrane characteristics. The membrane performance was evaluated by measuring the water flux, permeate flux, and BSA rejection. The hydrophilic membrane with the least contact angle was 65.79o, achieved with 2%wt PVP, whereas the most significant contact angle was 83.07o, obtained with 5%wt PVP. FESEM-EDX of a membrane containing 2%wt PVP reveals the presence of PVDF and TiO2. The highest PVP weight percentage resulted in the most excellent permeate flux. The highest water flux measured was 182.38 L/m2h, and the highest BSA flux measured was 160.98 L/m2h. PVP at 5% weight led to the lowest BSA rejection (50.84%). This study found that the PVP weight percentage substantially impacts membrane characteristics and performance.

Keywords: PVDF; TiO2; PVP; mixed-matrix membranes; phase inversion; NIPS; flat-sheet; BSA


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References


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