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Poly(vinylidene Fluoride-Hexafluoropropylene) Porous Membrane with Controllable Structure and Applications in Efficient Oil/Water Separation

Poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) porous membranes are fabricated via thermally induced phase separation (TIPS) with mixed diluent (dibutyl phthalate (DBP)/dioctyl phthalate (DOP)). The effects of mixed diluent are discussed in detail in term of morphology, mean pore size, sel...

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Autores principales: Wang, Xinya, Xiao, Changfa, Liu, Hailiang, Huang, Qinglin, Hao, Junqiang, Fu, Hao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5873022/
https://www.ncbi.nlm.nih.gov/pubmed/29562643
http://dx.doi.org/10.3390/ma11030443
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author Wang, Xinya
Xiao, Changfa
Liu, Hailiang
Huang, Qinglin
Hao, Junqiang
Fu, Hao
author_facet Wang, Xinya
Xiao, Changfa
Liu, Hailiang
Huang, Qinglin
Hao, Junqiang
Fu, Hao
author_sort Wang, Xinya
collection PubMed
description Poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) porous membranes are fabricated via thermally induced phase separation (TIPS) with mixed diluent (dibutyl phthalate (DBP)/dioctyl phthalate (DOP)). The effects of mixed diluent are discussed in detail in term of morphology, mean pore size, selective wettability, etc. The results show that the membrane structure changes from spherulitic to bicontinuous with the change of DBP/DOP ratio. It is also found that the degree of crystallization decreases with the decrease of DBP/DOP ratio in mixed diluent. When liquid–liquid (L-L) phase separation precedes solid–liquid (S-L) phase separation, the obtained membranes have outstanding hydrophobicity and lipophilicity, excellent mechanical property. Additionally, the PVDF-HFP hybrid membranes are prepared with silica (SiO(2)) particles and the effect of SiO(2) content on structure and properties is discussed. It is found that the PVDF-HFP hybrid membrane with 2 wt % SiO(2) (M3-S2) has better properties and higher filtration rate and separation efficiency for surfactant-stabilized water-in-oil emulsion separation. Moreover, the membrane M3-S2 also exhibits excellent antifouling performance for long-running.
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spelling pubmed-58730222018-03-30 Poly(vinylidene Fluoride-Hexafluoropropylene) Porous Membrane with Controllable Structure and Applications in Efficient Oil/Water Separation Wang, Xinya Xiao, Changfa Liu, Hailiang Huang, Qinglin Hao, Junqiang Fu, Hao Materials (Basel) Article Poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) porous membranes are fabricated via thermally induced phase separation (TIPS) with mixed diluent (dibutyl phthalate (DBP)/dioctyl phthalate (DOP)). The effects of mixed diluent are discussed in detail in term of morphology, mean pore size, selective wettability, etc. The results show that the membrane structure changes from spherulitic to bicontinuous with the change of DBP/DOP ratio. It is also found that the degree of crystallization decreases with the decrease of DBP/DOP ratio in mixed diluent. When liquid–liquid (L-L) phase separation precedes solid–liquid (S-L) phase separation, the obtained membranes have outstanding hydrophobicity and lipophilicity, excellent mechanical property. Additionally, the PVDF-HFP hybrid membranes are prepared with silica (SiO(2)) particles and the effect of SiO(2) content on structure and properties is discussed. It is found that the PVDF-HFP hybrid membrane with 2 wt % SiO(2) (M3-S2) has better properties and higher filtration rate and separation efficiency for surfactant-stabilized water-in-oil emulsion separation. Moreover, the membrane M3-S2 also exhibits excellent antifouling performance for long-running. MDPI 2018-03-18 /pmc/articles/PMC5873022/ /pubmed/29562643 http://dx.doi.org/10.3390/ma11030443 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Xinya
Xiao, Changfa
Liu, Hailiang
Huang, Qinglin
Hao, Junqiang
Fu, Hao
Poly(vinylidene Fluoride-Hexafluoropropylene) Porous Membrane with Controllable Structure and Applications in Efficient Oil/Water Separation
title Poly(vinylidene Fluoride-Hexafluoropropylene) Porous Membrane with Controllable Structure and Applications in Efficient Oil/Water Separation
title_full Poly(vinylidene Fluoride-Hexafluoropropylene) Porous Membrane with Controllable Structure and Applications in Efficient Oil/Water Separation
title_fullStr Poly(vinylidene Fluoride-Hexafluoropropylene) Porous Membrane with Controllable Structure and Applications in Efficient Oil/Water Separation
title_full_unstemmed Poly(vinylidene Fluoride-Hexafluoropropylene) Porous Membrane with Controllable Structure and Applications in Efficient Oil/Water Separation
title_short Poly(vinylidene Fluoride-Hexafluoropropylene) Porous Membrane with Controllable Structure and Applications in Efficient Oil/Water Separation
title_sort poly(vinylidene fluoride-hexafluoropropylene) porous membrane with controllable structure and applications in efficient oil/water separation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5873022/
https://www.ncbi.nlm.nih.gov/pubmed/29562643
http://dx.doi.org/10.3390/ma11030443
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