Milescu, Roxana A., McElroy, C. Robert orcid.org/0000-0003-2315-8153, Farmer, Thomas J. orcid.org/0000-0002-1039-7684 et al. (3 more authors) (2019) Fabrication of PES/PVP water filtration membranes using cyrene®, a safer bio-based polar aprotic solvent. Advances in Polymer Technology. 9692859. ISSN 1098-2329
Abstract
A more sustainable dialysis and water filtration membrane has been developed, by using the new, safer, bio-based solvent Cyrene® in place of N-methyl pyrrolidinone (NMP). The effects of solvent choice, solvent evaporation time, the temperature of casting gel, and coagulation bath together with the additive concentration on porosity and pore size distribution were studied. The results, combined with infrared spectra, SEM images, porosity results, water contact angle (WCA), and water permeation, confirm that Cyrene® is better media to produce polyethersulfone (PES) membranes. New methods, Mercury Intrusion Porosimetry (MIP) and NMR-based pore structure model, were applied to estimate the porosity and pore size distribution of the new membranes produced for the first time with Cyrene® and PVP as additive. Hansen Solubility Parameters in Practice (HSPiP) was used to predict polymer-solvent interactions. The use of Cyrene® resulted in reduced polyvinylpyrrolidone (PVP) loading than required when using NMP and gave materials with larger pores and overall porosity. Two different conditions of casting gel were applied in this study: a hot (70°C) and cold gel (17°C) were cast to obtain membranes with different morphologies and water filtration behaviours.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Roxana A. Milescu et al. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 30 Jul 2019 13:40 |
Last Modified: | 12 Dec 2024 00:14 |
Published Version: | https://doi.org/10.1155/2019/9692859 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1155/2019/9692859 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149122 |