Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO<sub>2</sub> Membranes

Composite PVDF-TiO<sub>2</sub> membranes are studied extensively in literature as effective anti-fouling membranes with photocatalytic properties. Yet, a full understanding of how preparation parameters affect the final membrane structure, properties and performance has not been realized...

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Autores principales:	Duc-Trung Tran, Jean-Pierre Méricq, Julie Mendret, Stephan Brosillon, Catherine Faur
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	PVDF TiO<sub>2</sub> photocatalytic membrane temperature non-solvent-induced phase separation (NIPS) Chemical technology TP1-1185 Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/76cc1a05ba804248946db275b6212dae
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spelling	oai:doaj.org-article:76cc1a05ba804248946db275b6212dae2021-11-25T18:19:59ZInfluence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO<sub>2</sub> Membranes10.3390/membranes111108762077-0375https://doaj.org/article/76cc1a05ba804248946db275b6212dae2021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0375/11/11/876https://doaj.org/toc/2077-0375Composite PVDF-TiO<sub>2</sub> membranes are studied extensively in literature as effective anti-fouling membranes with photocatalytic properties. Yet, a full understanding of how preparation parameters affect the final membrane structure, properties and performance has not been realized. In this study, PVDF-TiO<sub>2</sub> membranes (20 wt% TiO<sub>2</sub>/PVDF) were fabricated via the non-solvent-induced phase separation (NIPS) method with an emphasis on the preparation temperature. Then, a systematic approach was employed to study the evolution of the membrane formation process and membrane properties when the preparation temperature changed, as well as to establish a link between them. Typical asymmetric membranes with a high porosity were obtained, along with a vast improvement in the permeate flux compared to the neat PVDF membranes, but a reduction in mechanical strength was also observed. Interestingly, upon the increase in preparation temperature, a significant transition in membrane morphology was observed, notably the gradual diminution of the finger-like macrovoids. Other membrane properties such as permeability, porosity, thermal and mechanical properties, and compression behavior were also influenced accordingly. Together, the establishment of the ternary phase diagrams, the study of solvent–nonsolvent exchange rate, and the direct microscopic observation of membrane formation during phase separation, helped explain such evolution in membrane properties.Duc-Trung TranJean-Pierre MéricqJulie MendretStephan BrosillonCatherine FaurMDPI AGarticlePVDFTiO<sub>2</sub>photocatalytic membranetemperaturenon-solvent-induced phase separation (NIPS)Chemical technologyTP1-1185Chemical engineeringTP155-156ENMembranes, Vol 11, Iss 876, p 876 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	PVDF TiO<sub>2</sub> photocatalytic membrane temperature non-solvent-induced phase separation (NIPS) Chemical technology TP1-1185 Chemical engineering TP155-156
spellingShingle	PVDF TiO<sub>2</sub> photocatalytic membrane temperature non-solvent-induced phase separation (NIPS) Chemical technology TP1-1185 Chemical engineering TP155-156 Duc-Trung Tran Jean-Pierre Méricq Julie Mendret Stephan Brosillon Catherine Faur Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO<sub>2</sub> Membranes
description	Composite PVDF-TiO<sub>2</sub> membranes are studied extensively in literature as effective anti-fouling membranes with photocatalytic properties. Yet, a full understanding of how preparation parameters affect the final membrane structure, properties and performance has not been realized. In this study, PVDF-TiO<sub>2</sub> membranes (20 wt% TiO<sub>2</sub>/PVDF) were fabricated via the non-solvent-induced phase separation (NIPS) method with an emphasis on the preparation temperature. Then, a systematic approach was employed to study the evolution of the membrane formation process and membrane properties when the preparation temperature changed, as well as to establish a link between them. Typical asymmetric membranes with a high porosity were obtained, along with a vast improvement in the permeate flux compared to the neat PVDF membranes, but a reduction in mechanical strength was also observed. Interestingly, upon the increase in preparation temperature, a significant transition in membrane morphology was observed, notably the gradual diminution of the finger-like macrovoids. Other membrane properties such as permeability, porosity, thermal and mechanical properties, and compression behavior were also influenced accordingly. Together, the establishment of the ternary phase diagrams, the study of solvent–nonsolvent exchange rate, and the direct microscopic observation of membrane formation during phase separation, helped explain such evolution in membrane properties.
format	article
author	Duc-Trung Tran Jean-Pierre Méricq Julie Mendret Stephan Brosillon Catherine Faur
author_facet	Duc-Trung Tran Jean-Pierre Méricq Julie Mendret Stephan Brosillon Catherine Faur
author_sort	Duc-Trung Tran
title	Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO<sub>2</sub> Membranes
title_short	Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO<sub>2</sub> Membranes
title_full	Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO<sub>2</sub> Membranes
title_fullStr	Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO<sub>2</sub> Membranes
title_full_unstemmed	Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO<sub>2</sub> Membranes
title_sort	influence of preparation temperature on the properties and performance of composite pvdf-tio<sub>2</sub> membranes
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/76cc1a05ba804248946db275b6212dae
work_keys_str_mv	AT ductrungtran influenceofpreparationtemperatureonthepropertiesandperformanceofcompositepvdftiosub2submembranes AT jeanpierremericq influenceofpreparationtemperatureonthepropertiesandperformanceofcompositepvdftiosub2submembranes AT juliemendret influenceofpreparationtemperatureonthepropertiesandperformanceofcompositepvdftiosub2submembranes AT stephanbrosillon influenceofpreparationtemperatureonthepropertiesandperformanceofcompositepvdftiosub2submembranes AT catherinefaur influenceofpreparationtemperatureonthepropertiesandperformanceofcompositepvdftiosub2submembranes
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Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO<sub>2</sub> Membranes

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