Development of Janus Cellulose Acetate Fiber (CA) Membranes for Highly Efficient Oil–Water Separation

A new type of Janus cellulose acetate (CA) fiber membrane was used to separate oil–water emulsions, which was prepared with plasma gas phase grafting by polymerizing octamethylcyclotetrasiloxane (D4) onto a CA fiber membrane prepared by centrifugal spinning. The Janus–CA fiber membrane was described...

Full description

Saved in:
Bibliographic Details
Published in:Materials 2021-10, Vol.14 (20), p.5916
Main Authors: Yu, Xiaotian, Zhang, Xian, Xing, Yajie, Zhang, Hongjing, Jiang, Wuwei, Zhou, Ke, Li, Yongqiang
Format: Article
Language:English
Subjects:
Cellulose acetate
Cellulose fibers
Contact angle
Emission analysis
Emulsion polymerization
Emulsions
Energy consumption
Field emission microscopy
Fourier transforms
Hexanes
Hydrophobic surfaces
Hydrophobicity
Infrared analysis
Infrared spectroscopy
Interception
Membrane separation
Membranes
Molecular weight
Morphology
Octamethylcyclotetrasiloxane
Photoelectrons
Plasma
Separation
Spectroscopic analysis
Spinning (materials)
Toluene
Vapor phases
Water purification
Water transfer
X ray photoelectron spectroscopy
X-ray spectroscopy
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:A new type of Janus cellulose acetate (CA) fiber membrane was used to separate oil–water emulsions, which was prepared with plasma gas phase grafting by polymerizing octamethylcyclotetrasiloxane (D4) onto a CA fiber membrane prepared by centrifugal spinning. The Janus–CA fiber membrane was described in terms of chemical structure using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) analysis, energy dispersive X-ray spectroscopy (EDX) analysis and morphology by field emission scanning electron microscopy (FESEM). In this contribution, we examine the influence of spinning solution concentration, spinning speed and nozzle aperture on the centrifugal spinning process and the fiber morphology. Superhydrophobic/hydrophilic Janus–CA fiber membrane was used to separate water and 1,2-dibromoethane mixture and Toluene-in-water emulsion. Unidirectional water transfer Janus–CA fiber membrane was used to separate n-hexane and water mixture. The separation for the first-time interception rate was about 98.81%, 98.76% and 98.73%, respectively. Experimental results revealed that the Janus cellulose acetate (CA) fiber membrane gave a permeate flux of about 43.32, 331.72 and 275.27 L/(m2·h), respectively. The novel Janus–CA fiber membrane can potentially be used for sustainable W/O emulsion separation. We believe that this is a facile strategy for construction of filtration materials for practical oil–water separation.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14205916