A Facile Strategy toward the Preparation of a High-Performance Polyamide TFC Membrane with a CA/PVDF Support Layer

In this study, polyamide (PA) thin-film composite (TFC) nanofiltration membranes were fabricated via interfacial polymerization on cellulose acetate (CA)/poly(vinylidene fluoride) (PVDF) support layers. Several types of CA/PVDF supports were prepared via the phase inversion method. With increasing C...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2022-12, Vol.12 (24), p.4496
Main Authors: Liu, Feng, Li, Yanyan, Han, Lun, Xu, Zhenzhen, Zhou, Yuqi, Deng, Bingyao, Xing, Jian
Format: Article
Language:English
Subjects:
Acetic acid
Analysis
Cellulose acetate
Chemical synthesis
Composite materials
Desalination
Dielectric films
Fluorides
hydrophilic modification
interfacial polymerization
Mechanical properties
Membranes
Methods
Morphology
Nanofiltration
Nanotechnology
Nonwoven fabrics
Organic chemicals
poly(vinylidene fluoride)
Polyamide resins
Polyamides
Polyethylene terephthalate
Polymerization
Polymers
Polyvinylidene fluoride
Polyvinylidene fluorides
Pore size
Scanning electron microscopy
support layer
Thin films
Vinylidene fluoride
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Summary:In this study, polyamide (PA) thin-film composite (TFC) nanofiltration membranes were fabricated via interfacial polymerization on cellulose acetate (CA)/poly(vinylidene fluoride) (PVDF) support layers. Several types of CA/PVDF supports were prepared via the phase inversion method. With increasing CA, the PVDF membrane surface pore size decreased and hydrophilicity increased. The effect of the support properties on the performance and formation mechanism of PA films was systematically investigated via an interfacial polymerization (IP) process. The permselectivity of the resulting TFC membranes was evaluated using a MgSO4 solution. The results show that the desired polyamide TFC membrane exhibited excellent water flux (6.56 L/(m2·h·bar)) and bivalent salt ion rejection (>97%). One aim of this study is to explore how the support of CA/PVDF influences the IP process and the performance of PA film.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano12244496