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Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO(2) Membranes

Composite PVDF-TiO(2) 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...

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Autores principales: Tran, Duc-Trung, Méricq, Jean-Pierre, Mendret, Julie, Brosillon, Stephan, Faur, Catherine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8619545/
https://www.ncbi.nlm.nih.gov/pubmed/34832106
http://dx.doi.org/10.3390/membranes11110876
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author Tran, Duc-Trung
Méricq, Jean-Pierre
Mendret, Julie
Brosillon, Stephan
Faur, Catherine
author_facet Tran, Duc-Trung
Méricq, Jean-Pierre
Mendret, Julie
Brosillon, Stephan
Faur, Catherine
author_sort Tran, Duc-Trung
collection PubMed
description Composite PVDF-TiO(2) 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(2) membranes (20 wt% TiO(2)/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.
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spelling pubmed-86195452021-11-27 Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO(2) Membranes Tran, Duc-Trung Méricq, Jean-Pierre Mendret, Julie Brosillon, Stephan Faur, Catherine Membranes (Basel) Article Composite PVDF-TiO(2) 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(2) membranes (20 wt% TiO(2)/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. MDPI 2021-11-15 /pmc/articles/PMC8619545/ /pubmed/34832106 http://dx.doi.org/10.3390/membranes11110876 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tran, Duc-Trung
Méricq, Jean-Pierre
Mendret, Julie
Brosillon, Stephan
Faur, Catherine
Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO(2) Membranes
title Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO(2) Membranes
title_full Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO(2) Membranes
title_fullStr Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO(2) Membranes
title_full_unstemmed Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO(2) Membranes
title_short Influence of Preparation Temperature on the Properties and Performance of Composite PVDF-TiO(2) Membranes
title_sort influence of preparation temperature on the properties and performance of composite pvdf-tio(2) membranes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8619545/
https://www.ncbi.nlm.nih.gov/pubmed/34832106
http://dx.doi.org/10.3390/membranes11110876
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