Characterization on Performance, Morphologies and Molecular Properties of Dual-Surfactants Based Polyvinylidene Fluoride Ultrafiltration Membranes

Abdul Rahman Hassan,Sabariah Rozali,Che Wan Insyirah Che Wan Takwa,Nor Azirah Sulaiman,Nurul Hannan Mohd Safari

doi:10.3311/ppch.13862

Abdul Rahman Hassan, Sabariah Rozali + Show 3 more

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https://doi.org/10.3311/ppch.13862

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Abstract

This paper addressed the pioneering work on the effects of dual surfactants component on the performance, morphologies and molecular properties of polyvinylidene fluoride/polyether glycol (PVDF/PEG 200) ultrafiltration (UF) membranes. The PVDF surfactant membranes were prepared via dry/wet via phase inversion technique with the addition of sodium dodecyl sulfate (SDS)/Tween 80 and Triton X-100/Tween 80 into polymer solution. Experimental data revealed that the dual surfactants improved the membrane performance up to 120.84 L/m2 × h and 82 % of permeate flux and rejection of bovine serum albumin, respectively. In addition, 2 wt% of dual surfactants alsofound to induce the growth of fine finger-like and macro-voids cavities inside the membranes while the FTIR spectra proved that the existence of dual surfactants in PVDF membranes produced better molecular alignment which contributed significantly towards better flux and good rejection. In conclusion, the used of dual surfactants in the PVDF ultrafiltration membranes improved the performance-properties of the membranes and extending the possibly versatile for the membrane to be used for more applications.

Highlights

Membrane technology has vast applications in various industrial processes, namely in waste treatment [1, 2], food and biotechnology industries [3], metal industries [4], textile industries [5,6,7], chemical process industries [8], water production [9] and bacteria/virus removal applications [10]
This paper addressed the pioneering work on the effects of dual surfactants component on the performance, morphologies and molecular properties of polyvinylidene fluoride/polyether glycol (PVDF/PEG 200) ultrafiltration (UF) membranes
Experimental data revealed that the dual surfactants improved the membrane performance up to 120.84 L/m2 × h and 82 % of permeate flux and rejection of bovine serum albumin, respectively

Summary

Introduction

Membrane technology has vast applications in various industrial processes, namely in waste treatment [1, 2], food and biotechnology industries [3], metal industries [4], textile industries [5,6,7], chemical process industries [8], water production [9] and bacteria/virus removal applications [10]. Membranes can be classified based on their morphologies including dense homogenous polymer membranes, porous membranes and thin-film composite membranes [11]. The nascent film separated into a polymer-rich and a polymer-lean phase after the solvent of the casting solution exchanged with the non-solvent from the coagulation bath [18]. At this level, few types of membrane structures can be formed, i.e., a symmetric structure with uniform porosity, an asymmetric structure with thick macro-porous, spongy sub-layer or an asymmetric structure with finger-like and larger voids [19]

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Conclusion