Preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance
Although ultrafiltration (UF) membranes have gained considerable attention in water separation and purification process, most of the materials used for commercial UF membranes fabrication do not able to degrade/decompose easily and tend to cause severe environmental problem when they are discarded....
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my.utm.880382020-12-15T00:12:05Z http://eprints.utm.my/id/eprint/88038/ Preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance Aseri, N. S. Lau, W. J. Goh, P. S. Hasbullah, H. Othman, N. H. Ismail, A. F. TP Chemical technology Although ultrafiltration (UF) membranes have gained considerable attention in water separation and purification process, most of the materials used for commercial UF membranes fabrication do not able to degrade/decompose easily and tend to cause severe environmental problem when they are discarded. In view of this, an environmentally friendly hydrophilic polymeric material - polylactic acid (PLA) has been considered in this work, aiming to reduce not only the environmental impacts caused by the existing membranes but also to improve membrane water flux and antifouling resistance. In this study, the effects of PLA quantity and air gap (during spinning process) on the morphology and liquid separation performance of polyvinylidene fluoride (PVDF) hollow fiber membranes were investigated. The membrane properties were characterised using scanning electron microscope, atomic force microscope Fourier transform Infrared spectrometer, tensile tester and contact angle goniometer before filtration experiment was conducted. Results showed that the incorporation of small quantity of PLA (with PLA/PVDF weight ratio of ≤ 1.0) could significantly improve membrane water flux from ˜30 to 376.7 L/m2.h.bar without compromising rejection (95–97%). More importantly, the PLA-modified PVDF membranes required much lower temperature to decompose which minimizes environmental impacts. Owing to the improved surface hydrophilicity (lower water contact angle), the PLA-modified PVDF membranes also exhibited higher flux recovery rate than that of pure PVDF membrane, revealing the improved antifouling resistance against bovine serum albumin. The findings of this work demonstrated that biodegradable PLA is potential to be used to modify the characteristics of UF membranes, leading to enhanced water treatment process. Elsevier Ltd 2019-12 Article PeerReviewed Aseri, N. S. and Lau, W. J. and Goh, P. S. and Hasbullah, H. and Othman, N. H. and Ismail, A. F. (2019) Preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance. Journal of Water Process Engineering, 32 . p. 100912. ISSN 2214-7144 http://dx.doi.org/10.1016/j.jwpe.2019.100912 |
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TP Chemical technology Aseri, N. S. Lau, W. J. Goh, P. S. Hasbullah, H. Othman, N. H. Ismail, A. F. Preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance |
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Although ultrafiltration (UF) membranes have gained considerable attention in water separation and purification process, most of the materials used for commercial UF membranes fabrication do not able to degrade/decompose easily and tend to cause severe environmental problem when they are discarded. In view of this, an environmentally friendly hydrophilic polymeric material - polylactic acid (PLA) has been considered in this work, aiming to reduce not only the environmental impacts caused by the existing membranes but also to improve membrane water flux and antifouling resistance. In this study, the effects of PLA quantity and air gap (during spinning process) on the morphology and liquid separation performance of polyvinylidene fluoride (PVDF) hollow fiber membranes were investigated. The membrane properties were characterised using scanning electron microscope, atomic force microscope Fourier transform Infrared spectrometer, tensile tester and contact angle goniometer before filtration experiment was conducted. Results showed that the incorporation of small quantity of PLA (with PLA/PVDF weight ratio of ≤ 1.0) could significantly improve membrane water flux from ˜30 to 376.7 L/m2.h.bar without compromising rejection (95–97%). More importantly, the PLA-modified PVDF membranes required much lower temperature to decompose which minimizes environmental impacts. Owing to the improved surface hydrophilicity (lower water contact angle), the PLA-modified PVDF membranes also exhibited higher flux recovery rate than that of pure PVDF membrane, revealing the improved antifouling resistance against bovine serum albumin. The findings of this work demonstrated that biodegradable PLA is potential to be used to modify the characteristics of UF membranes, leading to enhanced water treatment process. |
format |
Article |
author |
Aseri, N. S. Lau, W. J. Goh, P. S. Hasbullah, H. Othman, N. H. Ismail, A. F. |
author_facet |
Aseri, N. S. Lau, W. J. Goh, P. S. Hasbullah, H. Othman, N. H. Ismail, A. F. |
author_sort |
Aseri, N. S. |
title |
Preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance |
title_short |
Preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance |
title_full |
Preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance |
title_fullStr |
Preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance |
title_full_unstemmed |
Preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance |
title_sort |
preparation and characterization of polylactic acid-modified polyvinylidene fluoride hollow fiber membranes with enhanced water flux and antifouling resistance |
publisher |
Elsevier Ltd |
publishDate |
2019 |
url |
http://eprints.utm.my/id/eprint/88038/ http://dx.doi.org/10.1016/j.jwpe.2019.100912 |
_version_ |
1687393520181051392 |