Super‐hydrophilic electrospun PVDF/PVA‐blended nanofiber membrane for microfiltration with ultrahigh water flux

ABSTRACT This work provides a novel approach to improve not only water flux but also fouling resistance of Polyvinylidene fluoride (PVDF) membranes. PVDF/Poly(vinyl alcohol) (PVA)‐blended nanofiber membranes were prepared via electrospinning method. The structure and performance of blended nanofiber...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2020-03, Vol.137 (9), p.n/a
Main Authors: Li, Meimei, Li, Jingde, Zhou, Mi, Xian, Yupei, Shui, Yonggang, Wu, Mengqiang, Yao, Yongyi
Format: Article
Language:English
Subjects:
Atomic force microscopes
Atomic force microscopy
Contact angle
crosslinking
electrospinning
Filtration
Flux
Fouling
Hydrophilicity
Infrared reflection
Materials science
Mechanical measurement
Membranes
Microfiltration
Nanofibers
Photoelectrons
Polymers
Polyvinyl alcohol
Polyvinylidene fluorides
separation techniques
Spectrum analysis
Water purification
Wettability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT This work provides a novel approach to improve not only water flux but also fouling resistance of Polyvinylidene fluoride (PVDF) membranes. PVDF/Poly(vinyl alcohol) (PVA)‐blended nanofiber membranes were prepared via electrospinning method. The structure and performance of blended nanofiber membranes were characterized by scanning electron microscopy (SEM), atomic force microscope (AFM), attenuated total reflection‐Fourier‐transform infrared (ATR‐FTIR) spectroscopy, X‐ray photoelectron spectroscopy (XPS), contact angle measurement, tensile mechanical measurement, and filtration experiments. These results indicate that PVA was uniformly blend in the PVDF matrix. This blended nanofiber membranes with the ridge‐and‐valley structure and bicontinuous phase exhibited the hydrophilic performance and super‐wettability, which is reflected in a drop of water fully spread within 1.44 s. Filtration experiments showed that the blended nanofiber membranes have ultrahigh flux and low irreversible fouling ratio. In general, this work enhances the possibility of hydrophilic modification of hydrophobic PVDF membranes. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48416. Schematic diagram of electrospinning membrane preparation and ultra‐high water flux microfiltration process.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.48416