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Effect of additives concentration on performance of cellulose acetate and polyethersulfone blend membranes

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Abstract

Asymmetric micro porous membranes have been prepared successfully from blending of cellulose acetate (CA) and polyethersulfone (PES) by the phase inversion method with N, N-dimethylformamide (DMF) as solvent. Two additives were selected in this study, including polyethylene glycol 600 (PEG 600) and polyvinylpyrrolidone (PVP). The effects of concentration of additives on CA/PES blend membrane performance and cross-section morphology were investigated in detail. CA/PES membranes were compared with CA/PES/PEG and CA/PES/PVP membranes in the performance such as pure water flux, membrane resistance, porosity and cross-section morphology. The resulting blend membranes were also carried out the rejection and permeate flux of Egg Albumin (EA) proteins with molecular weight of 45 Da. The membranes thus obtained with an additive concentration of 5 wt% of both PEG and PVP exhibited superior properties than the 80/20% blend composition of CA and PES membranes. The permeate flux of protein was increased from 44 to 134 lm2 h with increase in concentrations of both PVP and PEG in 80/20% blend composition of CA and PES membranes. Cross-sectional images from scanning electron microscopy showed larger macropores in the bottom layer of the membranes with increasing additives content. Observations from scanning electron microscopy provided qualitative evidence for the trends obtained for permeability and porosity results.

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Authors and Affiliations

  1. Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, 620015, India

    G. Arthanareeswaran

  2. Department of Chemistry, Anna University, Chennai, 600 025, India

    S. Ananda Kumar

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  1. G. Arthanareeswaran
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  2. S. Ananda Kumar
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Correspondence to G. Arthanareeswaran.

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Arthanareeswaran, G., Ananda Kumar, S. Effect of additives concentration on performance of cellulose acetate and polyethersulfone blend membranes. J Porous Mater 17, 515–522 (2010). https://doi.org/10.1007/s10934-009-9319-y

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  • DOI: https://doi.org/10.1007/s10934-009-9319-y

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